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Technology 96 views Nov 09, 2017
Laser Transverse Electric Field

This technology in the application of the performance of fast, save money, does not depend on any form, can be installed strong, high efficiency and good security. Once the task negotiated, within 24 ~ 36h to complete a single piece of processing. In the commissioning of hardening processing services, the standard range of daily processing tasks is from the small changes in the size of the precision components, until the large pump chassis, rope pulley and hundreds of kilograms of large die for processing. In order to improve component rigidity and reduce component thickness to save material during high quality hardening processes, functional levels such as cutting and quality-free stabilizers are applied. The structural stabilizer is a strong burning laser pointer trajectory that produces a high rigidity and a low vibration tendency within the component, which can be used in component design concepts and FEM analysis.

green laser pointer

As the high energy density positron research in the military, materials, energy and other fields of science has important strategic significance and application prospects, the field has become the international high-energy physics research hot and difficult. Einstein's energy equation tells us that matter and energy can be transformed into each other. According to the quantum electrodatics we have known that super-intense laser can tear the vacuum to produce positive and negative electron pairs, but the required laser intensity is at least seven orders of magnitude higher than the laser energy available in the current laboratory. This greatly limits the effort to artificially generate high-energy-density positrons.

When the radiation damping force is much larger than the lateral mass of the laser, the electrons are directly captured by the laser field to form a high energy density electron beam mass with a density of up to 40 times the critical density. These electrons, while accelerating in the direction of high power laser pointer propagation, oscillate under the action of the laser transverse electric field to radiate high-energy photons outward. Three - dimensional numerical simulation results show that the number of photons is up to 850 times the critical density, the total number of photons is 1015 orders of magnitude. Due to the symmetry of the scheme, the high-energy photons formed on both sides will produce a large number of high-energy positive and negative electron pairs directly to the propagating laser photons.

The advantage is that its pulse width and frequency are independently adjustable, adjust one of them does not affect the other laser parameters, which is Q-switched structure of the laser does not have. And this feature, to the stainless steel color marking with unlimited possibilities. In the actual marking operation, pulse width, frequency, power, speed, fill the way, fill the pitch, delay parameters and so on these factors will affect the color effect. It is understood that this ultra-short laser drive generated by the ultra-short pulse, high-quality high-energy proton beam can also be applied to proton photographic and material testing, laser nuclear fusion fast ignition, laboratory astrophysics, laser nuclear physics and nuclear medicine aspects of the study.

In 2016, SLM system sales of more than 1000, which uses the laser source is mainly fiber laser, disc laser / CO2 laser and femtosecond fiber laser, power range of 30W to 1kW or more. 3D printing of the fine degree is also getting higher and higher, print out the fine structure of the resolution has reached the order of microns. The next five years, the market will grow steadily, and the main driver of market growth comes from unmanned aerial vehicles, autopilot vehicles, robots, military and security. Part of the red laser lighting market is car laser lighting, mainly car headlights. BMW, Audi and other well-known car manufacturers have adopted a laser lighting system. Another part of the market is safe laser lighting, such as the night environment for people riding a warning sign.


Tags: #laser 

Faker Cool 's Entries

38 blogs
  • 27 Nov 2017
    Cost, quality, yield are the key success factors for the semiconductor and photovoltaic manufacturing industries. Among them, an important processing method is cutting, because the need to use different cutting process to separate the wafer into a die or the solar cell into a half-cell. However, the conventional mechanical or laser-based cutting techniques have more or less disadvantages such as particle formation due to material removal or material damage at the cutting edge. In this case, TLS-Dicing becomes a fast, clean, easy-to-use and reliable method for separating semiconductor materials such as silicon (Si), silicon carbide (SiC), germanium (Ge) and gallium arsenide (GaAs) Cost-effective alternative solution. Depending on the application, starting with the initial scribing process, the material is then high power laser heated according to carefully calculated energies. The material is heated and expanded, the pressure in the heated zone rises, and the tensile stress around the heated zone also increases. Immediately after laser heating, a very small amount of deionized water is sprayed for cooling (less than 10 ml / min). This will create a second cooling zone near the first zone, causing a tangential tensile stress mode. Tensile stresses generated in the superposed area of the two stress modes cause the material to crack and guide the crack tip through the material. Compared with traditional cutting technology, the heat laser beam separation technology shows many advantages, such as fast separation speed, very smooth side wall, no cracks and micro-cracks, excellent bending strength and no tool wear and material consumption Low cost of ownership. The process uses two laser sources: a Gaussian beam short pulse scribing laser (532 nm or near-infrared wavelength laser) for initial scribing and another cutting green laser pointer. Cutting lasers enable 200W continuous wave laser and near infrared wavelengths. Thermal laser beam separation technology is a non-cutting cutting process, the process itself produces almost no particles. Traditional cutting techniques have some drawbacks in terms of processing speed and cutting quality. For example, mechanical sawing feeds slowly, blades wear large, and costly. In addition, sawing tends to cause chipping on the edge of the wafer and delamination. In contrast, laser ablation produces a significant heat-affected zone, resulting in poor edge quality and the formation of micro-cracks. At the same time, the laser ablation rate is very low, requiring multiple ablations to complete the singulation of a single wafer. Compared with the above processing methods, the heat laser beam separation technology is a one-time process that can complete the thickness of the SiC wafer 300mm / s separation. In addition, the metal structure on the front-end cut tracks, the polyimide on the wafer, and the backside metal are both successfully separated without delamination or thermal effects. In general, thermal burning laser pointer separation is an entirely new and efficient way to segment brittle semiconductor materials used in the semiconductor and photovoltaics industries. It offers the advantages of high yield, low cost, and high quality partitioning, often with a single separation. The feed rate of this process is between 300 mm / s and 500 mm / s, depending on the application.
    148 Posted by Faker Cool
  • Cost, quality, yield are the key success factors for the semiconductor and photovoltaic manufacturing industries. Among them, an important processing method is cutting, because the need to use different cutting process to separate the wafer into a die or the solar cell into a half-cell. However, the conventional mechanical or laser-based cutting techniques have more or less disadvantages such as particle formation due to material removal or material damage at the cutting edge. In this case, TLS-Dicing becomes a fast, clean, easy-to-use and reliable method for separating semiconductor materials such as silicon (Si), silicon carbide (SiC), germanium (Ge) and gallium arsenide (GaAs) Cost-effective alternative solution. Depending on the application, starting with the initial scribing process, the material is then high power laser heated according to carefully calculated energies. The material is heated and expanded, the pressure in the heated zone rises, and the tensile stress around the heated zone also increases. Immediately after laser heating, a very small amount of deionized water is sprayed for cooling (less than 10 ml / min). This will create a second cooling zone near the first zone, causing a tangential tensile stress mode. Tensile stresses generated in the superposed area of the two stress modes cause the material to crack and guide the crack tip through the material. Compared with traditional cutting technology, the heat laser beam separation technology shows many advantages, such as fast separation speed, very smooth side wall, no cracks and micro-cracks, excellent bending strength and no tool wear and material consumption Low cost of ownership. The process uses two laser sources: a Gaussian beam short pulse scribing laser (532 nm or near-infrared wavelength laser) for initial scribing and another cutting green laser pointer. Cutting lasers enable 200W continuous wave laser and near infrared wavelengths. Thermal laser beam separation technology is a non-cutting cutting process, the process itself produces almost no particles. Traditional cutting techniques have some drawbacks in terms of processing speed and cutting quality. For example, mechanical sawing feeds slowly, blades wear large, and costly. In addition, sawing tends to cause chipping on the edge of the wafer and delamination. In contrast, laser ablation produces a significant heat-affected zone, resulting in poor edge quality and the formation of micro-cracks. At the same time, the laser ablation rate is very low, requiring multiple ablations to complete the singulation of a single wafer. Compared with the above processing methods, the heat laser beam separation technology is a one-time process that can complete the thickness of the SiC wafer 300mm / s separation. In addition, the metal structure on the front-end cut tracks, the polyimide on the wafer, and the backside metal are both successfully separated without delamination or thermal effects. In general, thermal burning laser pointer separation is an entirely new and efficient way to segment brittle semiconductor materials used in the semiconductor and photovoltaics industries. It offers the advantages of high yield, low cost, and high quality partitioning, often with a single separation. The feed rate of this process is between 300 mm / s and 500 mm / s, depending on the application.
    Nov 27, 2017 148
  • 09 Nov 2017
    This technology in the application of the performance of fast, save money, does not depend on any form, can be installed strong, high efficiency and good security. Once the task negotiated, within 24 ~ 36h to complete a single piece of processing. In the commissioning of hardening processing services, the standard range of daily processing tasks is from the small changes in the size of the precision components, until the large pump chassis, rope pulley and hundreds of kilograms of large die for processing. In order to improve component rigidity and reduce component thickness to save material during high quality hardening processes, functional levels such as cutting and quality-free stabilizers are applied. The structural stabilizer is a strong burning laser pointer trajectory that produces a high rigidity and a low vibration tendency within the component, which can be used in component design concepts and FEM analysis. As the high energy density positron research in the military, materials, energy and other fields of science has important strategic significance and application prospects, the field has become the international high-energy physics research hot and difficult. Einstein's energy equation tells us that matter and energy can be transformed into each other. According to the quantum electrodatics we have known that super-intense laser can tear the vacuum to produce positive and negative electron pairs, but the required laser intensity is at least seven orders of magnitude higher than the laser energy available in the current laboratory. This greatly limits the effort to artificially generate high-energy-density positrons. When the radiation damping force is much larger than the lateral mass of the laser, the electrons are directly captured by the laser field to form a high energy density electron beam mass with a density of up to 40 times the critical density. These electrons, while accelerating in the direction of high power laser pointer propagation, oscillate under the action of the laser transverse electric field to radiate high-energy photons outward. Three - dimensional numerical simulation results show that the number of photons is up to 850 times the critical density, the total number of photons is 1015 orders of magnitude. Due to the symmetry of the scheme, the high-energy photons formed on both sides will produce a large number of high-energy positive and negative electron pairs directly to the propagating laser photons. The advantage is that its pulse width and frequency are independently adjustable, adjust one of them does not affect the other laser parameters, which is Q-switched structure of the laser does not have. And this feature, to the stainless steel color marking with unlimited possibilities. In the actual marking operation, pulse width, frequency, power, speed, fill the way, fill the pitch, delay parameters and so on these factors will affect the color effect. It is understood that this ultra-short laser drive generated by the ultra-short pulse, high-quality high-energy proton beam can also be applied to proton photographic and material testing, laser nuclear fusion fast ignition, laboratory astrophysics, laser nuclear physics and nuclear medicine aspects of the study. In 2016, SLM system sales of more than 1000, which uses the laser source is mainly fiber laser, disc laser / CO2 laser and femtosecond fiber laser, power range of 30W to 1kW or more. 3D printing of the fine degree is also getting higher and higher, print out the fine structure of the resolution has reached the order of microns. The next five years, the market will grow steadily, and the main driver of market growth comes from unmanned aerial vehicles, autopilot vehicles, robots, military and security. Part of the red laser lighting market is car laser lighting, mainly car headlights. BMW, Audi and other well-known car manufacturers have adopted a laser lighting system. Another part of the market is safe laser lighting, such as the night environment for people riding a warning sign.
    97 Posted by Faker Cool
  • This technology in the application of the performance of fast, save money, does not depend on any form, can be installed strong, high efficiency and good security. Once the task negotiated, within 24 ~ 36h to complete a single piece of processing. In the commissioning of hardening processing services, the standard range of daily processing tasks is from the small changes in the size of the precision components, until the large pump chassis, rope pulley and hundreds of kilograms of large die for processing. In order to improve component rigidity and reduce component thickness to save material during high quality hardening processes, functional levels such as cutting and quality-free stabilizers are applied. The structural stabilizer is a strong burning laser pointer trajectory that produces a high rigidity and a low vibration tendency within the component, which can be used in component design concepts and FEM analysis. As the high energy density positron research in the military, materials, energy and other fields of science has important strategic significance and application prospects, the field has become the international high-energy physics research hot and difficult. Einstein's energy equation tells us that matter and energy can be transformed into each other. According to the quantum electrodatics we have known that super-intense laser can tear the vacuum to produce positive and negative electron pairs, but the required laser intensity is at least seven orders of magnitude higher than the laser energy available in the current laboratory. This greatly limits the effort to artificially generate high-energy-density positrons. When the radiation damping force is much larger than the lateral mass of the laser, the electrons are directly captured by the laser field to form a high energy density electron beam mass with a density of up to 40 times the critical density. These electrons, while accelerating in the direction of high power laser pointer propagation, oscillate under the action of the laser transverse electric field to radiate high-energy photons outward. Three - dimensional numerical simulation results show that the number of photons is up to 850 times the critical density, the total number of photons is 1015 orders of magnitude. Due to the symmetry of the scheme, the high-energy photons formed on both sides will produce a large number of high-energy positive and negative electron pairs directly to the propagating laser photons. The advantage is that its pulse width and frequency are independently adjustable, adjust one of them does not affect the other laser parameters, which is Q-switched structure of the laser does not have. And this feature, to the stainless steel color marking with unlimited possibilities. In the actual marking operation, pulse width, frequency, power, speed, fill the way, fill the pitch, delay parameters and so on these factors will affect the color effect. It is understood that this ultra-short laser drive generated by the ultra-short pulse, high-quality high-energy proton beam can also be applied to proton photographic and material testing, laser nuclear fusion fast ignition, laboratory astrophysics, laser nuclear physics and nuclear medicine aspects of the study. In 2016, SLM system sales of more than 1000, which uses the laser source is mainly fiber laser, disc laser / CO2 laser and femtosecond fiber laser, power range of 30W to 1kW or more. 3D printing of the fine degree is also getting higher and higher, print out the fine structure of the resolution has reached the order of microns. The next five years, the market will grow steadily, and the main driver of market growth comes from unmanned aerial vehicles, autopilot vehicles, robots, military and security. Part of the red laser lighting market is car laser lighting, mainly car headlights. BMW, Audi and other well-known car manufacturers have adopted a laser lighting system. Another part of the market is safe laser lighting, such as the night environment for people riding a warning sign.
    Nov 09, 2017 97
  • 30 Oct 2017
    Metal foil cutting is based on the design of the battery, a roll of metal foil along the long side cut into thin strips. Applicable to this part is the infrared pulse laser, high-speed high-quality cutting electrode plating. If the cutting width and quality have more precise requirements, you can also consider the pulse green and ultraviolet light. Metal foil cutting links refer to the design of the battery, the elongated strip of the anode film and cathode film cut into the desired shape. Depending on the battery design and whether the foil is fully coated, you can select or adjust the beam to cut the coating or cut only the foil. The green laser pointer used in this section is the same as the aluminum foil slit. The best way to cut the round hole is to 1: 1, that is, the ratio of aperture and plate thickness is 1: 1. Of course, this ratio, that is, the larger the pore size, cut out the high quality circle Hole is easier. Otherwise, when the fiber laser cutting machine energy is insufficient, the cutting hole easy to break point off point and round hole is not round the phenomenon. Round hole sometimes elliptical or irregular phenomenon This is related to the X \ Y axis motion does not match, and lead to X \ Y axis movement does not match the direct cause is the servo motor parameter adjustment is not appropriate. So the quality of cutting round hole, the servo motor also has certain requirements. Conventional fiber lasers use fiber-coupled technology to couple multiple beam outputs together, resulting in lower brightness of the output laser. The new generation of fiber lasers uses an innovative architecture that combines the pump diodes and drivers into separate pump modules. The gain fiber is mounted in a configurable gain module that can output more than 8kW of laser power. The gain module is based on the novel main oscillator / power amplifier (MOPA) design, enabling high-brightness most powerful laser output. In addition, the Ennie laser also uses a reliable integrated backlash isolator to protect all modules from the impact of backlit light, can be high anti-material full power, uninterrupted, stable processing. These two technological innovations play a vital role in RLS applications. As we all know, graphene can be used to manufacture a variety of electronic, optoelectronic devices, more scientists predicted that graphene will "completely change the 21st century", it is possible to set off a sweeping global disruptive new technology and new industrial revolution. It is understood that this time through laser writing to upgrade the existing graphene technology, the process is similar to the use of laser beam "hammer" metal forged into three-dimensional form. Finally, through the experiment and computer simulation, we can observe the authenticity and mechanism of the two-dimensional structure of graphene carbon atoms to three-dimensional shape. In 2016, China's industrial laser materials processing equipment market was about $ 3.8 billion, with an average annual compound growth rate (CAGR) of 12.51% over the past five years. The growth rate in 2017 is expected to be about 22%, the value will reach 4.6 billion US dollars. From this point of view, the global market for materials processing in 2016, the total market volume of about 12.6 billion US dollars, while the Chinese market reached the global laser materials processing equipment system revenue of one-third. Global burning laser materials processing system popular markets include smart phone manufacturing, aluminum deep processing of metal sheet cutting, electric vehicle batteries and display and so on.
    228 Posted by Faker Cool
  • Metal foil cutting is based on the design of the battery, a roll of metal foil along the long side cut into thin strips. Applicable to this part is the infrared pulse laser, high-speed high-quality cutting electrode plating. If the cutting width and quality have more precise requirements, you can also consider the pulse green and ultraviolet light. Metal foil cutting links refer to the design of the battery, the elongated strip of the anode film and cathode film cut into the desired shape. Depending on the battery design and whether the foil is fully coated, you can select or adjust the beam to cut the coating or cut only the foil. The green laser pointer used in this section is the same as the aluminum foil slit. The best way to cut the round hole is to 1: 1, that is, the ratio of aperture and plate thickness is 1: 1. Of course, this ratio, that is, the larger the pore size, cut out the high quality circle Hole is easier. Otherwise, when the fiber laser cutting machine energy is insufficient, the cutting hole easy to break point off point and round hole is not round the phenomenon. Round hole sometimes elliptical or irregular phenomenon This is related to the X \ Y axis motion does not match, and lead to X \ Y axis movement does not match the direct cause is the servo motor parameter adjustment is not appropriate. So the quality of cutting round hole, the servo motor also has certain requirements. Conventional fiber lasers use fiber-coupled technology to couple multiple beam outputs together, resulting in lower brightness of the output laser. The new generation of fiber lasers uses an innovative architecture that combines the pump diodes and drivers into separate pump modules. The gain fiber is mounted in a configurable gain module that can output more than 8kW of laser power. The gain module is based on the novel main oscillator / power amplifier (MOPA) design, enabling high-brightness most powerful laser output. In addition, the Ennie laser also uses a reliable integrated backlash isolator to protect all modules from the impact of backlit light, can be high anti-material full power, uninterrupted, stable processing. These two technological innovations play a vital role in RLS applications. As we all know, graphene can be used to manufacture a variety of electronic, optoelectronic devices, more scientists predicted that graphene will "completely change the 21st century", it is possible to set off a sweeping global disruptive new technology and new industrial revolution. It is understood that this time through laser writing to upgrade the existing graphene technology, the process is similar to the use of laser beam "hammer" metal forged into three-dimensional form. Finally, through the experiment and computer simulation, we can observe the authenticity and mechanism of the two-dimensional structure of graphene carbon atoms to three-dimensional shape. In 2016, China's industrial laser materials processing equipment market was about $ 3.8 billion, with an average annual compound growth rate (CAGR) of 12.51% over the past five years. The growth rate in 2017 is expected to be about 22%, the value will reach 4.6 billion US dollars. From this point of view, the global market for materials processing in 2016, the total market volume of about 12.6 billion US dollars, while the Chinese market reached the global laser materials processing equipment system revenue of one-third. Global burning laser materials processing system popular markets include smart phone manufacturing, aluminum deep processing of metal sheet cutting, electric vehicle batteries and display and so on.
    Oct 30, 2017 228
  • 26 Aug 2017
    Like people and dogs, cats benefit from keeping fit and active. Exercise is essential for your cat’s mental and physical health. It relieves stress and boredom, improves circulation, builds muscle tone and can prevent or reduce behavioral problems. To keep your cat fit and healthy you must play with them. There’s no better way to coax those “inner panther” instincts out than with a few good interactive cat laser pointer toys. Wand toys Wand toys are a simple stick with a piece of fabric or ribbon tied to the end of it. You can wave, twitch, flutter and circle the wand around randomly so that the ribbon moves like an insect or bird or other prey. It comes with the added benefit of keeping some distance between you and your cat’s claws. There are endless variations of this toy. Some have real feathers attached to the end. Some have sequins or fake mice filled with catnip. You’re likely to find one with the right textures to get your kitty up and moving. Don’t leave these toys out for kitty to play with without supervision. Watch for pieces of string or other components that might fall off the toy and get swallowed by your cat. Plus, think of it as a special treat. If this toy only comes out when you play with her it will remain attractive and interesting. Afterall, how many times have you seen mice and birds hanging out around a cat? Ball toys Ball toys are also attractive to many cats. When they scoot across the floor they mimic the movement of a mouse scampering by. You can insert treats or catnip into some balls to make playing with them more rewarding and exciting for your cat. There are also ball toys with bells inside them to attract your cat’s attention. Some ball toys you might like to try: Mylar balls (crinkly and shiny)Ping-pong balls (watch for wear)Sponge balls (nice and quiet) Catnip toys The majority of cats in the U.S will respond to catnip. Adding this herb to your cat’s playtime can increase her enjoyment! Try stuffing some catnip into a ball toy or spreading some out in a cardboard box. If you choose to let your cat ingest catnip, try to find one that is additive free. Beware, some cats get excited when they smell catnip. You may not know how your cat will respond. When cats get overexcited, they can sometimes bite. Laser pointer Laser pointers are great for cats that tend to be a little lazy. Most cats will become transfixed on the ever elusive red dot. If your cat won’t respond to other toys, but will respond to a laser pointer, great! But try not to rely on a laser pointer. Because cats can’t catch the red dot they’re likely to become frustrated. Try starting kitty out with the cat laser pointer then switching to a different toy once she get’s excited and playful. That way she’ll have something to catch. Our cats and dogs are like any other cats and dogs. They need playtime to stay active and fit. You can help by donating cat and dog toys to the shelter. We also need people to come play with our cats and walk our dogs.
    7562 Posted by Faker Cool
  • Like people and dogs, cats benefit from keeping fit and active. Exercise is essential for your cat’s mental and physical health. It relieves stress and boredom, improves circulation, builds muscle tone and can prevent or reduce behavioral problems. To keep your cat fit and healthy you must play with them. There’s no better way to coax those “inner panther” instincts out than with a few good interactive cat laser pointer toys. Wand toys Wand toys are a simple stick with a piece of fabric or ribbon tied to the end of it. You can wave, twitch, flutter and circle the wand around randomly so that the ribbon moves like an insect or bird or other prey. It comes with the added benefit of keeping some distance between you and your cat’s claws. There are endless variations of this toy. Some have real feathers attached to the end. Some have sequins or fake mice filled with catnip. You’re likely to find one with the right textures to get your kitty up and moving. Don’t leave these toys out for kitty to play with without supervision. Watch for pieces of string or other components that might fall off the toy and get swallowed by your cat. Plus, think of it as a special treat. If this toy only comes out when you play with her it will remain attractive and interesting. Afterall, how many times have you seen mice and birds hanging out around a cat? Ball toys Ball toys are also attractive to many cats. When they scoot across the floor they mimic the movement of a mouse scampering by. You can insert treats or catnip into some balls to make playing with them more rewarding and exciting for your cat. There are also ball toys with bells inside them to attract your cat’s attention. Some ball toys you might like to try: Mylar balls (crinkly and shiny)Ping-pong balls (watch for wear)Sponge balls (nice and quiet) Catnip toys The majority of cats in the U.S will respond to catnip. Adding this herb to your cat’s playtime can increase her enjoyment! Try stuffing some catnip into a ball toy or spreading some out in a cardboard box. If you choose to let your cat ingest catnip, try to find one that is additive free. Beware, some cats get excited when they smell catnip. You may not know how your cat will respond. When cats get overexcited, they can sometimes bite. Laser pointer Laser pointers are great for cats that tend to be a little lazy. Most cats will become transfixed on the ever elusive red dot. If your cat won’t respond to other toys, but will respond to a laser pointer, great! But try not to rely on a laser pointer. Because cats can’t catch the red dot they’re likely to become frustrated. Try starting kitty out with the cat laser pointer then switching to a different toy once she get’s excited and playful. That way she’ll have something to catch. Our cats and dogs are like any other cats and dogs. They need playtime to stay active and fit. You can help by donating cat and dog toys to the shelter. We also need people to come play with our cats and walk our dogs.
    Aug 26, 2017 7562
  • 31 Jul 2017
    Free electron laser is called the fourth generation of light source, can provide from far infrared to X-ray band of high-intensity coherent radiation, in physics, chemistry, materials science, life sciences and other fields with unprecedented revolutionary value. The traditional free electron burning laser pointer based on the RF accelerator to produce high-energy electron beam, and then use the periodic arrangement of the magnet composed of the wave device to tweak and modulation of the electron beam, and finally radiation of high-intensity coherent radiation. Either the RF electron accelerator or the electronic amplifiers made of periodic magnets are bulky and expensive. The development of miniaturized, low-cost, new generation of free-electron lasers, including desktop electronic accelerators and ripples, is a major goal ever pursued by the scientific community. Laser cutting technology has the following advantages: high precision; slit narrow; cutting surface smooth; fast; cutting quality is good; no damage to the workpiece; not affected by the shape of the workpiece; not subject to the hardness of the material being cut; save mold investment; Materials and so on. Laser cutting technology is widely used in metal and non-metallic materials processing, can greatly reduce the processing time, reduce processing costs, improve the quality of the workpiece. In recent years, the use of two-color red laser pointer field in the air to stimulate the plasma wire to produce strong terahertz radiation method with its high efficiency, has been widespread concern. The microscopic physical mechanism of this method to produce strong terahertz radiation is mainly described by the ionization current model and the nonlinear four-wave mixing model. A large number of previous studies have shown that such terahertz radiation sources are a single-cycle broadband pulse. Such as the realization of the radiation pulse of the parameters (including the radiation angle distribution, carrier envelope phase, pulse energy, etc.) precision control, will be able to fully expand its application space, to play its application value. Early laser vibration welding used in the automotive industry is a combination of laser technology and lightweight components, which can be used to solve the above-mentioned problems without the need for filler. The traditional laser vibration welding, collimated beam through the uniaxial vibration, through the focus lens focused spot with the welding head with the workpiece relative to the movement, the formation of a certain amplitude, frequency and offset of the weld; 2-axis galvanometer System vibration welding is through the control system to form a vibration weld, the need for higher costs. Unlike the CO2 laser, the laser power used in the UV laser panel splitting device is slightly lower and the maximum power 15W can be reached, while the CO2 laser is up to 50W or higher. In addition, our UV laser device parameters are easy to tune. When machining thick plates, you can adjust the 5mw laser pointer power to 15W. And when machining flexible materials, you can also reduce the laser power to 1W-3W. When the processing of flexible material or a specific plastic, you can also use the laser scanning, microsecond delay control between each scan to ensure proper cooling of heat affected zone, thus avoiding the one-time energy implementation of huge heat generated in the products above the agglomeration, this heat affected by near control wire protection components. The technique involves exposing the sample to intense pulses of the green laser pointer, but the photon energy is much lower than the electron energy emitted from the material. There is a very large electric field associated with such a pulse, which will result in an electron passing through the quantum tunnel from the top of the valence band to the bottom of the electron conduction band, thus creating holes in the electron conduction band. Electrons and holes are driven by the electric field to reach high momentum in the opposite direction. The electric field itself is oscillating, and both the electrons and the holes undergo a reverse and aggregation when the field is transformed. At this point, electrons and holes are recombined to emit a photon escape material and for detection. The energy of the photon is equal to the energy gap between the valence band and the conduction band at the recombination point. https://www.moterus.es/grupo-motero/moterus/foros/categorias/general/temas/the-future-potential-market-of-lasers http://laserman.mie1.net/ http://eyes123456.hatenablog.com/entry/2017/07/28/164322
    124 Posted by Faker Cool
  • Free electron laser is called the fourth generation of light source, can provide from far infrared to X-ray band of high-intensity coherent radiation, in physics, chemistry, materials science, life sciences and other fields with unprecedented revolutionary value. The traditional free electron burning laser pointer based on the RF accelerator to produce high-energy electron beam, and then use the periodic arrangement of the magnet composed of the wave device to tweak and modulation of the electron beam, and finally radiation of high-intensity coherent radiation. Either the RF electron accelerator or the electronic amplifiers made of periodic magnets are bulky and expensive. The development of miniaturized, low-cost, new generation of free-electron lasers, including desktop electronic accelerators and ripples, is a major goal ever pursued by the scientific community. Laser cutting technology has the following advantages: high precision; slit narrow; cutting surface smooth; fast; cutting quality is good; no damage to the workpiece; not affected by the shape of the workpiece; not subject to the hardness of the material being cut; save mold investment; Materials and so on. Laser cutting technology is widely used in metal and non-metallic materials processing, can greatly reduce the processing time, reduce processing costs, improve the quality of the workpiece. In recent years, the use of two-color red laser pointer field in the air to stimulate the plasma wire to produce strong terahertz radiation method with its high efficiency, has been widespread concern. The microscopic physical mechanism of this method to produce strong terahertz radiation is mainly described by the ionization current model and the nonlinear four-wave mixing model. A large number of previous studies have shown that such terahertz radiation sources are a single-cycle broadband pulse. Such as the realization of the radiation pulse of the parameters (including the radiation angle distribution, carrier envelope phase, pulse energy, etc.) precision control, will be able to fully expand its application space, to play its application value. Early laser vibration welding used in the automotive industry is a combination of laser technology and lightweight components, which can be used to solve the above-mentioned problems without the need for filler. The traditional laser vibration welding, collimated beam through the uniaxial vibration, through the focus lens focused spot with the welding head with the workpiece relative to the movement, the formation of a certain amplitude, frequency and offset of the weld; 2-axis galvanometer System vibration welding is through the control system to form a vibration weld, the need for higher costs. Unlike the CO2 laser, the laser power used in the UV laser panel splitting device is slightly lower and the maximum power 15W can be reached, while the CO2 laser is up to 50W or higher. In addition, our UV laser device parameters are easy to tune. When machining thick plates, you can adjust the 5mw laser pointer power to 15W. And when machining flexible materials, you can also reduce the laser power to 1W-3W. When the processing of flexible material or a specific plastic, you can also use the laser scanning, microsecond delay control between each scan to ensure proper cooling of heat affected zone, thus avoiding the one-time energy implementation of huge heat generated in the products above the agglomeration, this heat affected by near control wire protection components. The technique involves exposing the sample to intense pulses of the green laser pointer, but the photon energy is much lower than the electron energy emitted from the material. There is a very large electric field associated with such a pulse, which will result in an electron passing through the quantum tunnel from the top of the valence band to the bottom of the electron conduction band, thus creating holes in the electron conduction band. Electrons and holes are driven by the electric field to reach high momentum in the opposite direction. The electric field itself is oscillating, and both the electrons and the holes undergo a reverse and aggregation when the field is transformed. At this point, electrons and holes are recombined to emit a photon escape material and for detection. The energy of the photon is equal to the energy gap between the valence band and the conduction band at the recombination point. https://www.moterus.es/grupo-motero/moterus/foros/categorias/general/temas/the-future-potential-market-of-lasers http://laserman.mie1.net/ http://eyes123456.hatenablog.com/entry/2017/07/28/164322
    Jul 31, 2017 124
  • 11 Jul 2017
    A laser beam expander is designed to increase the diameter of a collimated input beam to a larger collimated output beam. Beam expanders are used in applications such as laser scanning, interferometry, and remote sensing. Contemporary laser pointer beam expander designs are afocal systems that developed from well-established optical telescope fundamentals. In such systems, the object rays, located at infinity, enter parallel to the optical axis of the internal optics and exit parallel to them as well. This means that there is no focal length to the entire system.   Theory: Laser Beam Expanders In a laser beam expander design, the placement of the objective and image lenses is reversed. In the Keplerian beam expander design, the collimated input beam focuses to a spot between the objective and image lenses, producing a point within the system where the laser's energy is concentrated (Figure 1). The focused spot heats the air between the lenses, deflecting light rays from their optical path, which can potentially lead to wavefront errors. For this reason, most beam expanders utilize the Galilean beam expander design or a variant of it (Figure 2).   Figure 1: Keplerian Beam Expander Figure 2: Galilean Beam Expander   When using the Keplerian or Galilean design in laser beam expander applications, it is important to be able to calculate the output beam divergence, which determines the deviation from a perfectly collimated source. The beam divergence is dependent upon the diameters of the input and output laser beams.   The Magnifying Power (MP) can now be expressed in terms of the Beam Divergences or Beam Diameters.   Interpreting the above equations, one sees that while the Output Beam Diameter (DO) increases, the Output Beam Divergence (θO) decreases and vice versa. Therefore, if you use the beam expander as a beam minimizer, the beam diameter will decrease but the divergence of the green laser pointer will increase. The price to pay for a small beam is a large divergence angle.   In addition to the above, it is important to be able to calculate the output beam diameter at a specific working distance (L). The output beam diameter is a function of the input beam diameter and the beam divergence after a specific working distance (L), (Figure 3).   Figure 3: Calculating the Output Beam Diameter at a Specific Working Distance   Laser beam divergence is specified in terms of a full angle, therefore, the above equation is expressed in terms of θI and not θI/2. Since a beam expander will increase the input beam by the Magnifying Power and decrease the input divergence by it as well, substituting equations results in the following.     Application Example Numerical example to explore previously mentioned beam expander equations.   Initial Parameters   Beam Expander Magnifying Power = MP = 10X Input Beam Diameter = 1mm Input Beam Divergence = 1mrad Working Distance = L = 100m   Calculated Parameter   Output Beam Diameter   Compare this to the Beam Diameter without using a beam expander   Although a beam expander will increase the input red laser pointer beam by a specific expansion power, it will also decrease the divergence by the same expansion power, resulting in a smaller collimated beam at a large distance.
    167 Posted by Faker Cool
  • A laser beam expander is designed to increase the diameter of a collimated input beam to a larger collimated output beam. Beam expanders are used in applications such as laser scanning, interferometry, and remote sensing. Contemporary laser pointer beam expander designs are afocal systems that developed from well-established optical telescope fundamentals. In such systems, the object rays, located at infinity, enter parallel to the optical axis of the internal optics and exit parallel to them as well. This means that there is no focal length to the entire system.   Theory: Laser Beam Expanders In a laser beam expander design, the placement of the objective and image lenses is reversed. In the Keplerian beam expander design, the collimated input beam focuses to a spot between the objective and image lenses, producing a point within the system where the laser's energy is concentrated (Figure 1). The focused spot heats the air between the lenses, deflecting light rays from their optical path, which can potentially lead to wavefront errors. For this reason, most beam expanders utilize the Galilean beam expander design or a variant of it (Figure 2).   Figure 1: Keplerian Beam Expander Figure 2: Galilean Beam Expander   When using the Keplerian or Galilean design in laser beam expander applications, it is important to be able to calculate the output beam divergence, which determines the deviation from a perfectly collimated source. The beam divergence is dependent upon the diameters of the input and output laser beams.   The Magnifying Power (MP) can now be expressed in terms of the Beam Divergences or Beam Diameters.   Interpreting the above equations, one sees that while the Output Beam Diameter (DO) increases, the Output Beam Divergence (θO) decreases and vice versa. Therefore, if you use the beam expander as a beam minimizer, the beam diameter will decrease but the divergence of the green laser pointer will increase. The price to pay for a small beam is a large divergence angle.   In addition to the above, it is important to be able to calculate the output beam diameter at a specific working distance (L). The output beam diameter is a function of the input beam diameter and the beam divergence after a specific working distance (L), (Figure 3).   Figure 3: Calculating the Output Beam Diameter at a Specific Working Distance   Laser beam divergence is specified in terms of a full angle, therefore, the above equation is expressed in terms of θI and not θI/2. Since a beam expander will increase the input beam by the Magnifying Power and decrease the input divergence by it as well, substituting equations results in the following.     Application Example Numerical example to explore previously mentioned beam expander equations.   Initial Parameters   Beam Expander Magnifying Power = MP = 10X Input Beam Diameter = 1mm Input Beam Divergence = 1mrad Working Distance = L = 100m   Calculated Parameter   Output Beam Diameter   Compare this to the Beam Diameter without using a beam expander   Although a beam expander will increase the input red laser pointer beam by a specific expansion power, it will also decrease the divergence by the same expansion power, resulting in a smaller collimated beam at a large distance.
    Jul 11, 2017 167
  • 08 Jun 2017
    Ultra-short pulse laser has the advantages of high peak power, short duration of action, wide spectrum and so on. It has a wide range of applications in basic science, medical, aerospace, quantum communication and military fields. Especially in recent years, the rapid development of femtosecond fiber burning laser because of simple structure, low cost, high stability and easy to carry and so on, showing more and more widely used prospects. At present, fiber-mode-locked lasers, including other types of solid-state lasers, have to achieve stable mode-locked operation and more time to rely on saturable absorbers, but not only because of the laser damage and loss caused by saturable absorbers. Constraints can produce the laser pulse width and power, will also affect the reliability of long-term operation. Therefore, the research and development of new saturable absorber with high damage threshold and low loss has attracted much attention of laser experts and materials experts. In the past more than 10 years, with the development of condensed matter physics and material preparation technology, carbon nanotubes, graphene, topological insulator as saturable absorption materials have been successful in the application of mode-locked 100mw laser pointer, especially the newly developed two-dimensional nano materials with narrow band gap, ultrafast electron relaxation time and high the damage threshold, exhibits excellent saturable absorption, utilization of the mode-locked laser materials has become one of the hot research content of people's attention. Chinese Research Institute of physics, Beijing Key Laboratory of optical physics, Condensed State Physics National Laboratory L07 group has been committed to the development of ultrafast laser, the miniaturization of femtosecond laser in recent years, has achieved the multi crystal and fiber laser passively mode-locked saturable absorption. By using a pulsed laser deposition method of antimony telluride topological insulator formed on the surface of uniform growth of tapered fiber saturable absorber, for the first time the hybrid fiber blue laser pointer mode-locked, the output pulse with 70 FS results. By using two tungsten sulfide with ultrashort electron relaxation time as the saturable absorber, with decreasing the core diameter of tapered fibers, obtained 67 FS mode-locked pulse output, verified the advantages of the hybrid mode-locked fiber laser with shorter pulse width, low timing jitter. In addition to dark soliton generation technology, the relationship through the theoretical calculation of fiber laser Ginzburg- Landau equation in gain and loss and dispersion and nonlinear parameters, the theoretical analysis of the dynamic mechanism of the formation of the dark soliton, obtained SNR results up to 94 dB, the experiment is implemented on a wide spectrum of the dark soliton pulse. The research group in collaboration with the Beijing University of Posts and Telecommunications recently, two tungsten sulfide as a saturable absorber material for optical fiber mode-locked laser, and further realize the pulse width of 246 FS mode-locked 5mw laser pointer output, which is so far known to transition metal sulfides of all fiber mode-locked laser generated by the short pulse report.
    239 Posted by Faker Cool
  • Ultra-short pulse laser has the advantages of high peak power, short duration of action, wide spectrum and so on. It has a wide range of applications in basic science, medical, aerospace, quantum communication and military fields. Especially in recent years, the rapid development of femtosecond fiber burning laser because of simple structure, low cost, high stability and easy to carry and so on, showing more and more widely used prospects. At present, fiber-mode-locked lasers, including other types of solid-state lasers, have to achieve stable mode-locked operation and more time to rely on saturable absorbers, but not only because of the laser damage and loss caused by saturable absorbers. Constraints can produce the laser pulse width and power, will also affect the reliability of long-term operation. Therefore, the research and development of new saturable absorber with high damage threshold and low loss has attracted much attention of laser experts and materials experts. In the past more than 10 years, with the development of condensed matter physics and material preparation technology, carbon nanotubes, graphene, topological insulator as saturable absorption materials have been successful in the application of mode-locked 100mw laser pointer, especially the newly developed two-dimensional nano materials with narrow band gap, ultrafast electron relaxation time and high the damage threshold, exhibits excellent saturable absorption, utilization of the mode-locked laser materials has become one of the hot research content of people's attention. Chinese Research Institute of physics, Beijing Key Laboratory of optical physics, Condensed State Physics National Laboratory L07 group has been committed to the development of ultrafast laser, the miniaturization of femtosecond laser in recent years, has achieved the multi crystal and fiber laser passively mode-locked saturable absorption. By using a pulsed laser deposition method of antimony telluride topological insulator formed on the surface of uniform growth of tapered fiber saturable absorber, for the first time the hybrid fiber blue laser pointer mode-locked, the output pulse with 70 FS results. By using two tungsten sulfide with ultrashort electron relaxation time as the saturable absorber, with decreasing the core diameter of tapered fibers, obtained 67 FS mode-locked pulse output, verified the advantages of the hybrid mode-locked fiber laser with shorter pulse width, low timing jitter. In addition to dark soliton generation technology, the relationship through the theoretical calculation of fiber laser Ginzburg- Landau equation in gain and loss and dispersion and nonlinear parameters, the theoretical analysis of the dynamic mechanism of the formation of the dark soliton, obtained SNR results up to 94 dB, the experiment is implemented on a wide spectrum of the dark soliton pulse. The research group in collaboration with the Beijing University of Posts and Telecommunications recently, two tungsten sulfide as a saturable absorber material for optical fiber mode-locked laser, and further realize the pulse width of 246 FS mode-locked 5mw laser pointer output, which is so far known to transition metal sulfides of all fiber mode-locked laser generated by the short pulse report.
    Jun 08, 2017 239
  • 10 May 2017
    According to researchers at the University of Sheffield, they have developed a new 3D printing / weighting process, through the use of energy-saving diode laser arrays, without galvanometers, to achieve faster and more economical part processing results, Sheffield University believes they will change Parts of the production mode. We are familiar with the laser melting powder material processing methods are increasingly being used in aerospace and automotive high value-added areas, the powder material through the burning laser melting method of manufacturing metal and plastic parts. In order to melt the powder, there must be sufficient laser energy to be transferred to the material to melt the powder in the central area, thus creating a completely dense part, but at the same time the heat conduction exceeds the laser spot perimeter, affecting the surrounding powder. So the smallest manufacturing size is generally larger than the laser spot, the amount of sintering beyond the laser point depends on the thermal conductivity of the powder and the energy of the laser. The diffused laser energy and the laser scanning speed of the bath are carefully adjusted and controlled so as to achieve consistent metal alloy properties and layer thickness. According to the 3D Science Valley, focusing on the high power laser beam is the key to the performance of the alloy during the melting process. To achieve a consistent process depends on controlling the laser spot size, it is necessary to make the laser energy density consistent with the energy transferred to the adjacent powder TheIn the current powder bed laser melting process, a clear focus beam is obtained by means of a galvanometer because any focus of focus does not result in energy transfer to materials other than the melting zone that result in insufficient powder melting and may result in a finished product size error And the surface finish is poor. If the size of the focused spot increases significantly, it may cause the finished part to contain a large amount of incomplete melted powder and difficult to control material properties. So a long time to occupy the consensus of the industry brain is galvanometer is to achieve a key part of precision machining. Unlike the general processing technology on the market, Sheffield University has tried to abandon galvanometers. They refer to this process as Diode Area Melting, which can be turned on or off by using a single 200mw laser pointer diode array in parallel, according to the University of Sheffield, which is faster and more energy efficient. "Our research challenges the industry's long-standing belief that low-power diodes are unable to achieve sufficient powder material melting due to low power and poor beam quality.Diode Area Melting's key process," said Dr. Kristian Groom, Ph.D., from the Department of Electrical and Electrical Engineering. Is to move the short wavelength laser array (808nm), increase the absorption collimation effect, and focus the beam in a few milliseconds to reach the melting point of 1400 ℃, resulting in dense parts, this method can be used for 17-4 stainless steel parts processing. Dr. Groom and Dr. Kamran Mumtaz of the Department of Mechanical Engineering plan to extend this technology to the field of processing of plastic products. The team believes that the equipment may expand into a multi-material processing system in the future. The study was supported by the Engineering and Physical Sciences Research Council (EPSRC). What is the commercial value of the study at Sheffield University? But also need to follow up the observation, to abandon the galvanometer of this attempt, it is understood that after the German Fraunhofer Institute released only 30,000 euros for small and medium enterprises entry-level SLM 3D printer is no galvanometer. Fraunhofer's equipment is equipped with a 140 W laser diode with a focus diameter of 250 microns and a Cartesian coordinate system. The device can produce 90mm high metal parts, the maximum diameter of 80mm. Equipment appearance is very compact, only the space 1.3 × 0.8 × 1.4 meters. By adjusting the print speed and quality, the institute also tried to print a medium-sized stainless steel assembly with a density of more than 99.5% and can be printed in 12 hours. However, Fraunhofer's device does not seem to involve 30mw laser pointer diode arrays. In addition, short wavelength lasers typically include light emitting wavelengths from 390nm to 950nm, and long wavelength lasers cover lasers with luminescence wavelengths from 980nm to 1550nm, while Sheffield University Short wavelength laser array (808nm) to process metal powder, can be said to be a brain hole open attempt.
    204 Posted by Faker Cool
  • According to researchers at the University of Sheffield, they have developed a new 3D printing / weighting process, through the use of energy-saving diode laser arrays, without galvanometers, to achieve faster and more economical part processing results, Sheffield University believes they will change Parts of the production mode. We are familiar with the laser melting powder material processing methods are increasingly being used in aerospace and automotive high value-added areas, the powder material through the burning laser melting method of manufacturing metal and plastic parts. In order to melt the powder, there must be sufficient laser energy to be transferred to the material to melt the powder in the central area, thus creating a completely dense part, but at the same time the heat conduction exceeds the laser spot perimeter, affecting the surrounding powder. So the smallest manufacturing size is generally larger than the laser spot, the amount of sintering beyond the laser point depends on the thermal conductivity of the powder and the energy of the laser. The diffused laser energy and the laser scanning speed of the bath are carefully adjusted and controlled so as to achieve consistent metal alloy properties and layer thickness. According to the 3D Science Valley, focusing on the high power laser beam is the key to the performance of the alloy during the melting process. To achieve a consistent process depends on controlling the laser spot size, it is necessary to make the laser energy density consistent with the energy transferred to the adjacent powder TheIn the current powder bed laser melting process, a clear focus beam is obtained by means of a galvanometer because any focus of focus does not result in energy transfer to materials other than the melting zone that result in insufficient powder melting and may result in a finished product size error And the surface finish is poor. If the size of the focused spot increases significantly, it may cause the finished part to contain a large amount of incomplete melted powder and difficult to control material properties. So a long time to occupy the consensus of the industry brain is galvanometer is to achieve a key part of precision machining. Unlike the general processing technology on the market, Sheffield University has tried to abandon galvanometers. They refer to this process as Diode Area Melting, which can be turned on or off by using a single 200mw laser pointer diode array in parallel, according to the University of Sheffield, which is faster and more energy efficient. "Our research challenges the industry's long-standing belief that low-power diodes are unable to achieve sufficient powder material melting due to low power and poor beam quality.Diode Area Melting's key process," said Dr. Kristian Groom, Ph.D., from the Department of Electrical and Electrical Engineering. Is to move the short wavelength laser array (808nm), increase the absorption collimation effect, and focus the beam in a few milliseconds to reach the melting point of 1400 ℃, resulting in dense parts, this method can be used for 17-4 stainless steel parts processing. Dr. Groom and Dr. Kamran Mumtaz of the Department of Mechanical Engineering plan to extend this technology to the field of processing of plastic products. The team believes that the equipment may expand into a multi-material processing system in the future. The study was supported by the Engineering and Physical Sciences Research Council (EPSRC). What is the commercial value of the study at Sheffield University? But also need to follow up the observation, to abandon the galvanometer of this attempt, it is understood that after the German Fraunhofer Institute released only 30,000 euros for small and medium enterprises entry-level SLM 3D printer is no galvanometer. Fraunhofer's equipment is equipped with a 140 W laser diode with a focus diameter of 250 microns and a Cartesian coordinate system. The device can produce 90mm high metal parts, the maximum diameter of 80mm. Equipment appearance is very compact, only the space 1.3 × 0.8 × 1.4 meters. By adjusting the print speed and quality, the institute also tried to print a medium-sized stainless steel assembly with a density of more than 99.5% and can be printed in 12 hours. However, Fraunhofer's device does not seem to involve 30mw laser pointer diode arrays. In addition, short wavelength lasers typically include light emitting wavelengths from 390nm to 950nm, and long wavelength lasers cover lasers with luminescence wavelengths from 980nm to 1550nm, while Sheffield University Short wavelength laser array (808nm) to process metal powder, can be said to be a brain hole open attempt.
    May 10, 2017 204
  • 02 May 2017
      Food machinery is one of the products in direct contact with food production process, its quality directly affects food safety. Recently, the Quality Supervision Bureau found that four groups of food processing machinery failed, the overall sampling failed rate of nearly two percent. Prior to this, Quality and Technical Supervision also carried out commercial food processing equipment product supervision and spot checks, spot checks of 31 batches of commercial food processing equipment products, failed 10 batches, the failure rate of 32.3%. By these non-qualified machinery production of goods, how many have been consumers to buy, consumption has been unable to estimate the quality of food machinery directly affect the food safety, more about people's health. All along, China's food machinery industry is facing a small and scattered, large and not the embarrassing situation, the core technology of products is difficult to compete with the developed countries. To be invincible in the international market, food production must be mechanized, automated, specialized and large-scale, from the traditional manual labor and workshop-style operation freed, improve health, safety and production efficiency. Compared with the traditional processing technology, fiber high power laser pointer cutting machine in the food machinery production advantages. The traditional processing methods need to open mold, stamping, cutting plate, bending and other links, low efficiency, mold consumption, the use of high cost, seriously hindered the pace of food machinery industry innovation and development. Laser processing in the application of food machinery has the following advantages: safety and health, laser cutting is a non-contact processing, which is very clean, suitable for food machinery production; cutting slit, laser cutting of the slot is generally 0.10 ~ 0.20mm; cutting surface smooth, laser cutting surface without burrs, cutting all kinds of thickness of the plate, and the truncated surface is very smooth, no secondary processing to create high-grade food machinery; speed, and effectively improve food machinery production efficiency, suitable for large The processing of products: large pieces of mold manufacturing costs are high, burning laser cutting without any mold manufacturing, and can completely avoid the formation of the material when the collapse of the pile, a substantial reduction in production costs and improve the quality of food machinery. Very suitable for the development of new products, once the product drawings, immediately after the laser processing, in the shortest possible time to get new products in kind, effectively promote the upgrading of food machinery; saving materials, 1000mw laser pointer processing using computer programming, can be different Shape of the product of the material cut, to maximize the utilization of materials, reduce the cost of food machinery production. The future, the domestic food machinery products, food machinery manufacturing technology will be a better embodiment of information technology, digital, fine, high-speed, automation, and constantly catch up with foreign advanced level.
    174 Posted by Faker Cool
  •   Food machinery is one of the products in direct contact with food production process, its quality directly affects food safety. Recently, the Quality Supervision Bureau found that four groups of food processing machinery failed, the overall sampling failed rate of nearly two percent. Prior to this, Quality and Technical Supervision also carried out commercial food processing equipment product supervision and spot checks, spot checks of 31 batches of commercial food processing equipment products, failed 10 batches, the failure rate of 32.3%. By these non-qualified machinery production of goods, how many have been consumers to buy, consumption has been unable to estimate the quality of food machinery directly affect the food safety, more about people's health. All along, China's food machinery industry is facing a small and scattered, large and not the embarrassing situation, the core technology of products is difficult to compete with the developed countries. To be invincible in the international market, food production must be mechanized, automated, specialized and large-scale, from the traditional manual labor and workshop-style operation freed, improve health, safety and production efficiency. Compared with the traditional processing technology, fiber high power laser pointer cutting machine in the food machinery production advantages. The traditional processing methods need to open mold, stamping, cutting plate, bending and other links, low efficiency, mold consumption, the use of high cost, seriously hindered the pace of food machinery industry innovation and development. Laser processing in the application of food machinery has the following advantages: safety and health, laser cutting is a non-contact processing, which is very clean, suitable for food machinery production; cutting slit, laser cutting of the slot is generally 0.10 ~ 0.20mm; cutting surface smooth, laser cutting surface without burrs, cutting all kinds of thickness of the plate, and the truncated surface is very smooth, no secondary processing to create high-grade food machinery; speed, and effectively improve food machinery production efficiency, suitable for large The processing of products: large pieces of mold manufacturing costs are high, burning laser cutting without any mold manufacturing, and can completely avoid the formation of the material when the collapse of the pile, a substantial reduction in production costs and improve the quality of food machinery. Very suitable for the development of new products, once the product drawings, immediately after the laser processing, in the shortest possible time to get new products in kind, effectively promote the upgrading of food machinery; saving materials, 1000mw laser pointer processing using computer programming, can be different Shape of the product of the material cut, to maximize the utilization of materials, reduce the cost of food machinery production. The future, the domestic food machinery products, food machinery manufacturing technology will be a better embodiment of information technology, digital, fine, high-speed, automation, and constantly catch up with foreign advanced level.
    May 02, 2017 174
  • 10 Mar 2017
    Laser cutting technology has the following advantages: high precision; slit narrow; cutting surface smooth; fast; cutting quality is good; no damage to the workpiece; not affected by the shape of the workpiece; not subject to the hardness of the material being cut; save mold investment; Materials and so on. Laser cutting technology is widely used in metal and non-metallic materials processing, can greatly reduce the processing time, reduce processing costs, improve the quality of the workpiece. Now the society is everywhere in the application of 1000mw green laser: doctors use it to correct vision, the cashier scans your goods, quantum scientists to control the quantum bits of future quantum computers. For most applications, the current lasers are very cumbersome and are full of energy inefficient lasers, but quantum scientists need lasers that can work at very low temperatures and very small scales. For more than 40 years, they have been looking for efficient and accurate microwave lasers that will not be disturbed in very cold conditions, under quantum operating conditions. The laser has a unique characteristic that emits a fully synchronized coherent light. This means that the line width (corresponding to the color) is very narrow A typical laser is composed of a large number of emitters (atoms, molecules or semiconductors). These conventional lasers are usually inefficient and consume a lot of heat during the lasing process. This makes it difficult for them to run at low temperatures, such as when operating a quantum computer. Efficient high quality good coherent microwave light source, in the current future design of quantum computers is essential. Microwave pulses are used to read and transmit information, correct errors, access and control individual quantum components. Although the current microwave source is expensive and inefficient, the Joseph Johnson junction manufactured by QuTech is a highly efficient burning laser pen source and is an easy-to-control and modified chip solution. The team used the tunable Josephson junction to expand its design, which was made from nanowires, allowing rapid control of microwave emissions from multiple quantum components. In the future, such devices may produce so-called & quot; amplitude-compressed & quot; light, which is essential for most quantum communication protocols compared to conventional lasers that have less intensity fluctuations. This work marks an important step in the control of large quantum computing systems. With the development of new technologies, high powered laser pointer cover increasingly large spectrum, but some wavelengths are still not easy to achieve. This includes an ultraviolet (UV) band of about 300 nanometers, especially if a short pulse duration is to be achieved and has a high intensity. In general, UV pulse generation is usually generated by a nonlinear process, such as the generation of second harmonics or the generation of frequency, where the new photons are superimposed by summing the sum of the basic pulsed photons to give them higher energy and have a new The color formation. However, the efficiency of these processes is very low. In order to obtain this very narrow linewidth pulsed laser, the task group has been for many years. First, the design and development of a single longitudinal mode low noise continuous wave fiber laser with a line width less than 10 kHz has a relative intensity noise and frequency noise of -110dB / Hz and 45dB Hz2 / Hz respectively. Furthermore, the design and development of the laser Based on the frequency reference of the low-pressure gas chamber of the hollow-core photonic crystal fiber (HC-PCF), the frequency stabilization of the continuous-wave fiber 5000mw green laser is realized, which solves the problem of the seed laser source of the implanted single longitudinal mode Q-switched fiber laser. On the basis of this, by eliminating the adverse effects such as the pigtail type acousto-optic modulator in the seed injection single longitudinal mode Q-switched laser operation, and finally the active intensity modulation type Q switch is obtained, the very narrow linewidth Single longitudinal mode Q - switched fiber laser pulse. At present, the research group has adopted the optical fiber amplification technology, this single longitudinal mode Q-pulse energy has been raised to 0.2mJ, line width is still less than 2MHz, and for continuous wave fiber laser, the power is increased to 10W, line width is still Keep within 40kHz. In addition, through the rational design of the cooling system and pump control module, this high-power single longitudinal mode continuous wave and pulsed fiber laser developed into engineering prototype, has been the initial application. The phenomenon of new bubbles is called multiphoton absorption, which occurs in the case of light focusing at the point where the femtosecond laser multiphoton is absorbed. Multi-photon absorption allows researchers to create microbubbles in a very precise position by focusing the mobile 3000mw laser pointer into a liquid-filled container as a different part of the "screen". Use a high viscosity or dense liquid to prevent the formation of foam in the liquid, but once the bubble is formed, immediately rise to the top of the liquid position.
    283 Posted by Faker Cool
  • Laser cutting technology has the following advantages: high precision; slit narrow; cutting surface smooth; fast; cutting quality is good; no damage to the workpiece; not affected by the shape of the workpiece; not subject to the hardness of the material being cut; save mold investment; Materials and so on. Laser cutting technology is widely used in metal and non-metallic materials processing, can greatly reduce the processing time, reduce processing costs, improve the quality of the workpiece. Now the society is everywhere in the application of 1000mw green laser: doctors use it to correct vision, the cashier scans your goods, quantum scientists to control the quantum bits of future quantum computers. For most applications, the current lasers are very cumbersome and are full of energy inefficient lasers, but quantum scientists need lasers that can work at very low temperatures and very small scales. For more than 40 years, they have been looking for efficient and accurate microwave lasers that will not be disturbed in very cold conditions, under quantum operating conditions. The laser has a unique characteristic that emits a fully synchronized coherent light. This means that the line width (corresponding to the color) is very narrow A typical laser is composed of a large number of emitters (atoms, molecules or semiconductors). These conventional lasers are usually inefficient and consume a lot of heat during the lasing process. This makes it difficult for them to run at low temperatures, such as when operating a quantum computer. Efficient high quality good coherent microwave light source, in the current future design of quantum computers is essential. Microwave pulses are used to read and transmit information, correct errors, access and control individual quantum components. Although the current microwave source is expensive and inefficient, the Joseph Johnson junction manufactured by QuTech is a highly efficient burning laser pen source and is an easy-to-control and modified chip solution. The team used the tunable Josephson junction to expand its design, which was made from nanowires, allowing rapid control of microwave emissions from multiple quantum components. In the future, such devices may produce so-called & quot; amplitude-compressed & quot; light, which is essential for most quantum communication protocols compared to conventional lasers that have less intensity fluctuations. This work marks an important step in the control of large quantum computing systems. With the development of new technologies, high powered laser pointer cover increasingly large spectrum, but some wavelengths are still not easy to achieve. This includes an ultraviolet (UV) band of about 300 nanometers, especially if a short pulse duration is to be achieved and has a high intensity. In general, UV pulse generation is usually generated by a nonlinear process, such as the generation of second harmonics or the generation of frequency, where the new photons are superimposed by summing the sum of the basic pulsed photons to give them higher energy and have a new The color formation. However, the efficiency of these processes is very low. In order to obtain this very narrow linewidth pulsed laser, the task group has been for many years. First, the design and development of a single longitudinal mode low noise continuous wave fiber laser with a line width less than 10 kHz has a relative intensity noise and frequency noise of -110dB / Hz and 45dB Hz2 / Hz respectively. Furthermore, the design and development of the laser Based on the frequency reference of the low-pressure gas chamber of the hollow-core photonic crystal fiber (HC-PCF), the frequency stabilization of the continuous-wave fiber 5000mw green laser is realized, which solves the problem of the seed laser source of the implanted single longitudinal mode Q-switched fiber laser. On the basis of this, by eliminating the adverse effects such as the pigtail type acousto-optic modulator in the seed injection single longitudinal mode Q-switched laser operation, and finally the active intensity modulation type Q switch is obtained, the very narrow linewidth Single longitudinal mode Q - switched fiber laser pulse. At present, the research group has adopted the optical fiber amplification technology, this single longitudinal mode Q-pulse energy has been raised to 0.2mJ, line width is still less than 2MHz, and for continuous wave fiber laser, the power is increased to 10W, line width is still Keep within 40kHz. In addition, through the rational design of the cooling system and pump control module, this high-power single longitudinal mode continuous wave and pulsed fiber laser developed into engineering prototype, has been the initial application. The phenomenon of new bubbles is called multiphoton absorption, which occurs in the case of light focusing at the point where the femtosecond laser multiphoton is absorbed. Multi-photon absorption allows researchers to create microbubbles in a very precise position by focusing the mobile 3000mw laser pointer into a liquid-filled container as a different part of the "screen". Use a high viscosity or dense liquid to prevent the formation of foam in the liquid, but once the bubble is formed, immediately rise to the top of the liquid position.
    Mar 10, 2017 283

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  • 26 Aug 2017
    Like people and dogs, cats benefit from keeping fit and active. Exercise is essential for your cat’s mental and physical health. It relieves stress and boredom, improves circulation, builds muscle tone and can prevent or reduce behavioral problems. To keep your cat fit and healthy you must play with them. There’s no better way to coax those “inner panther” instincts out than with a few good interactive cat laser pointer toys. Wand toys Wand toys are a simple stick with a piece of fabric or ribbon tied to the end of it. You can wave, twitch, flutter and circle the wand around randomly so that the ribbon moves like an insect or bird or other prey. It comes with the added benefit of keeping some distance between you and your cat’s claws. There are endless variations of this toy. Some have real feathers attached to the end. Some have sequins or fake mice filled with catnip. You’re likely to find one with the right textures to get your kitty up and moving. Don’t leave these toys out for kitty to play with without supervision. Watch for pieces of string or other components that might fall off the toy and get swallowed by your cat. Plus, think of it as a special treat. If this toy only comes out when you play with her it will remain attractive and interesting. Afterall, how many times have you seen mice and birds hanging out around a cat? Ball toys Ball toys are also attractive to many cats. When they scoot across the floor they mimic the movement of a mouse scampering by. You can insert treats or catnip into some balls to make playing with them more rewarding and exciting for your cat. There are also ball toys with bells inside them to attract your cat’s attention. Some ball toys you might like to try: Mylar balls (crinkly and shiny)Ping-pong balls (watch for wear)Sponge balls (nice and quiet) Catnip toys The majority of cats in the U.S will respond to catnip. Adding this herb to your cat’s playtime can increase her enjoyment! Try stuffing some catnip into a ball toy or spreading some out in a cardboard box. If you choose to let your cat ingest catnip, try to find one that is additive free. Beware, some cats get excited when they smell catnip. You may not know how your cat will respond. When cats get overexcited, they can sometimes bite. Laser pointer Laser pointers are great for cats that tend to be a little lazy. Most cats will become transfixed on the ever elusive red dot. If your cat won’t respond to other toys, but will respond to a laser pointer, great! But try not to rely on a laser pointer. Because cats can’t catch the red dot they’re likely to become frustrated. Try starting kitty out with the cat laser pointer then switching to a different toy once she get’s excited and playful. That way she’ll have something to catch. Our cats and dogs are like any other cats and dogs. They need playtime to stay active and fit. You can help by donating cat and dog toys to the shelter. We also need people to come play with our cats and walk our dogs.
    7562 Posted by Faker Cool
  • 10 Aug 2016
    Aircraft Hit By Lasers That forced the aircraft — one of two assigned to a 250-kilometre radius from Toronto — to stay grounded. Ornge managed to cope with the reduced capacity and said the incident was reported to South Simcoe police and Transport Canada.It was the second strike that day and the latest concerning example of lasers being pointed at Ornge aircraft, putting not just pilots and crew but also their patients at risk.There have been 13 3000mw green laser strikes so far in 2016, already surpassing the 11 total in 2015, which was the highest year since Ornge started keeping track in 2012. There were between eight and nine a year from 2012 and 2014. Ornge says this year is already the worst yet for 20000mw laser pen strikes, with two of its air ambulance helicopters hit Sunday in incidents that caused a possible eye injury to a pilot and grounded his aircraft for hours.The agency said the pilot’s helicopter had just left Barrie to deliver a patient to Toronto’s Sunnybrook hospital when it was struck by a green laser around 10 p.m.Director of helicopter flight operations Peter Cunnington said the pilot wasn’t impacted by the strike until he walked into Sunnybrook himself and the bright lights bothered his left eye. He was assessed in the hospital for suspected eye damage and told not to fly for the rest of his 7 p.m. to 7 a.m. shift. The increasing prevalence of powerful hand-pointed lasers has led to a dramatic spike in incidents of them being pointed at aircraft, with Transport Canada logging nearly 600 such incidents last year alone.Cunnington said that while Ottawa has launched a public-safety campaign warning of the dangers of laser pointers — an effort Ornge was involved in — the message doesn’t seem to be getting through.While it is a criminal offence to flash a 5000mw green laser at airborne vehicles, he said that in his view people aren’t thinking twice before doing it. In total, there have now been 49 laser incidents in the last four years, including the one early Sunday when a Kenora-based Ornge helicopter was hit by a green laser while carrying a patient to Winnipeg.That laser exposure lasted two minutes and no one was injured, the agency said.Cunnington said the roll-out of night-vision goggles for Ornge pilots on night flights should hopefully cut the visibility of lasers aimed at the service’s air fleet. “My main concern, I think, is I would hope that the authorities have better means of tracking these people down. Even if you read the papers, the amount of people that actually wind up getting charged with a criminal offence on this isn’t that high,” Cunnington said.“The fines are huge but it doesn’t seem that that many people are being charged. There are some, but there doesn’t seem to be enough to deter the behaviour.” http://answerfix.com/Business-Finance/Laser-Radar-For-Service-Robots-_779 http://eyes123456.bloggets.net/design-implementation-low-power-compact-frequency-stabilized-laser-system/
    669 Posted by Faker Cool
  • 02 Aug 2016
    Analysis of Laser Heat Treatment Technology Blue Laser Pointer quenching is to use a laser to heat the surface of the material above the transformation point, with the material self cooling, austenite transformation to martensite, so that the material surface hardening of the quenching technology.The laser quenching of gears, the heating and cooling speed is very high, short processing cycle, do not need to external quenching medium. With the deformation of the workpiece is small and clean working environment, don't need grinding teeth, such as finishing and be processed gear size is not limit the size of the equipment by heat treatment etc. the unique advantages. Quality Advantage Gatling laser quenching of high power density, cooling speed, no need of water or oil and other cooling media, is clean, fast quenching process. Compared with the induction quenching and flame hardening, carburizing and quenching process, laser quenching hardened layer of uniform, high hardness (general than induction quenching and 1-3HRC), the workpiece deformation small, heating layer depth and heating track is easy to control, easy to realize automation, do not need to like induction quenching was designed according to the corresponding induction coil of different size of parts, machining of large parts need not by carburizing and quenching the chemical heat treatment furnace size restrictions, so in many areas of industry is gradually replacing the traditional induction quenching and chemical heat treatment process. It is especially important that the deformation of the workpiece can be ignored before and after laser quenching, so it is especially suitable for the surface treatment of parts with high precision. Technical Characteristics The depth of the burning cigarette with laser hardened layer is different from that of the component, size and shape, as well as the laser process parameters, and is generally in the range of 0.3~2.0mm. In the case of large gear tooth surface, large shaft parts of the shaft neck hardening, the surface roughness is basically unchanged, do not require subsequent mechanical processing can meet the needs of the actual working conditions. Applicable Material Green laser quenching has been successfully applied to metallurgical industry, mechanical industry, petroleum and chemical industry in the vulnerable parts of the surface hardening, especially in improving roller, guide, gear, shear blade wearing a life, significant effect and achieved great economic benefit and social benefit. In recent years, the mold, gears and other parts of the surface hardening has also been more and more widely used. With the now processing industry development, morphological processing also changed, laser thermal processing technology is using high power laser, heating a metal material surface, due to the high power density, making heat on the surface of the processed products can not be timely pass go, resulting in high temperature for processing goods surface machining area rapidly warming to austenitizing temperature to achieve rapid heating. Due to the very rapid machining process, and an article of manufacture for the overall temperature remains low temperature, instantaneous high temperature processing area, the overall temperature dilution of the object, so as to achieve the effect of quenching heat treatment. Small power green laser 5000mw is rapid oxidation or vaporization of the surface material, mark, like now of the fiber laser marking machine is the use of the this, resulting in a wide range of applications in many fields now. The technology is mainly used for surface strengthening of auto parts or tooling, improve the surface hardness, wear resistance, corrosion resistance and strength and high temperature performance, such as automobile engine cylinder, crankshaft, die stamping, casting plate, such as laser heat. As now the development of high power laser, laser 3000mw heat treatment is becoming more and more diversified, within the scope of the processing time 10-3s to 10-7s, power density per square mm larger than 0.1kW, caused by changes in the organizational structure of the material surface, thus realize the item processing of heat treatment. A wide range of applications, almost of all metal objects surface heat treatment, in now the automobile, metallurgy, heavy machinery, hardware products, ships, medical equipment and aerospace field are widely used. Laser processing is the transformation and upgrading of traditional technology, laser performance is more and more impact of the traditional industries, and now many industries to provide a more efficient processing solutions. Laser heat treatment technology using high power laser, combined with the current automation technology, and computer control technology to achieve the processing of processed goods. High power laser beam under computer control, by now automation technology to achieve compared to industrial parts of heat treatment, and the traditional processing method, laser heat treatment technology energy is highly concentrated, small processing area, and small thermal deformation, high machining quality, high precision, pieces from the size and shape of the restriction without cooling medium, and no pollution, low noise and high efficiency. http://www.everyonetobuy.com/20000mw-lasers.html http://www.everyonetobuy.com/200mw-green-laser-pointer-with-lock-switch.html  
    567 Posted by Faker Cool
  • 07 Nov 2016
    Since the advent of the first laser in 1960, laser research and its application in various fields has been rapid development. Its high coherence in the high-precision measurement, material structure analysis, information storage and communication and other fields has been widely used. High directivity and high brightness of the blue laser pointer can be widely used in processing and manufacturing. In recent 20 years, laser manufacturing technology has penetrated into many high-tech fields and industries, and began to replace or transform some of the traditional processing industry . In order to meet the industrialization of high-tech in the 21st century, and to meet the needs of micro-manufacturing, research and development of high-performance laser source is imperative. As a branch of laser processing, laser micromachining has received wide attention in the past decade. One reason for this is due to the emergence of more efficient laser sources. Such as Nd: YAG lasers with very high peak power and ultrashort pulsed solid-state lasers, and very high beam quality. Another reason is a more precise, high-speed CNC operating platform. But a more important reason is the emerging industrial demand. In microelectronics processing, the semiconductor layer perforation, register cutting and circuit repair are used in laser micro-processing technology. Laser micromachining generally refers to the process size in the few to several hundred microns. The width of the 100mw laser pointer pulse is between femtoseconds (fs) and nanoseconds (ns). Laser wavelengths range from far-infrared to wide-band of X-rays. At present mainly used in microelectronics, micro-mechanical and micro-optical processing of the three areas. With the development of laser micromachining technology and mature, will be extended in a wider area and application. With the development of electronic products in the direction of portable and miniaturization, the increase of unit volume information (high density) and the increase of processing speed per unit time (high speed) put new demands on microelectronic packaging technology. Such as modern mobile phones and digital cameras per square centimeter installed about 1200 interconnection lines. The key to increasing the level of chip packaging is to preserve the presence of miniature vias between the different layers of the circuit, providing a high-speed connection between the surface-mounted device and the underlying signal panel through the mini-vias, effectively reducing Package area. On the other hand, with the development of portable electronic products such as mobile phones, digital cameras and notebook computers in recent years, light-weight, thin, short and small, the printed circuit board (PCB) gradually presents high-density interconnection technology as the main body Of the laminated, multi-functional features. In order to effectively ensure the electrical connections between the layers and the external device fixation, vias (via) has become an important part of multi-layer PCB. The cost of drilling the current PCB board system costs usually account for 30% -40%. In high-speed, high-density PCB design, designers always want the smaller the better hole, so the board can not only leave more wiring space. And the smaller the hole, the more suitable for high-speed circuits. The traditional mechanical drilling the smallest size of only 100μm, which obviously can not meet the requirements, instead of taking a new type of 1000mw laser pointer micro-through hole processing. CO2 laser processing currently available in the industry to achieve the diameter of the pores in the 30-40μm hole or with UV laser processing 10μm or so holes. Laser micromachining technology Laser cutting, drilling, engraving, scribing, thermal infiltration, welding, etc., in the equipment manufacturing industry, the automotive and aerospace precision manufacturing industry and various microfabrication industries such as 20 micron inkjet printers Of the ink jet processing. Various micro-optical elements can be processed by laser surface treatment techniques such as micro-pressure type, sanding and polishing, etc., and the microstructure can be changed by amorphization such as laser filling of porous glass or glass-ceramic, and then by adjusting the external mechanical force, The micro-optical element is processed in the softening stage by means of plasma-assisted micro-forming. Laser micromachining technology has the advantages of non-contact, selective processing, small heat-affected zone, high precision and high repetition rate, and high processing flexibility of part size and shape. In fact, the laser micro-processing technology is characterized by the largest "direct write" processing, simplifying the process, to achieve rapid prototyping of micro-machinery manufacturing. In addition, the method is not such as corrosion and other methods to bring environmental pollution problems, can be described as "green manufacturing." There are two types of laser micromachining techniques used in micro-mechanical manufacturing: material removal micro-machining techniques, such as 5000mw laser pointer direct writing micromachining, laser LIGA, etc .; material stacking micromachining techniques such as laser microstereolithography, laser-assisted deposition, laser Constituency sintering and so on. Excimer laser wavelength is short, focusing spot diameter is small, high power density, very suitable for micro-processing and semiconductor materials processing. In the excimer laser micromachining system, most of the use of mask projection processing, you can not mask, direct use of the focus spot etching parts, excimer laser technology and numerical control technology, combined laser beam scanning and XY table Relative motion and Z direction of the micro-feed, can be directly in the matrix material on the carved out the fine graphics, or the processing of three-dimensional micro-structure. At present, excimer laser direct writing method can be used to fabricate high aspect ratio microstructure with a line width of several microns. In addition, the use of excimer laser to take a similar rapid prototyping (RP) manufacturing technology, the use of layer-by-layer scanning of the three-dimensional micro-processing research has also achieved good results. It uses excimer laser deep etching instead of carrier lithography, thus avoiding the high precision carrier mask production, overlay alignment and other technical problems, while the economic and extensive use of laser light source is much better than the synchronization Radiation containing light source, thus greatly reducing the manufacturing cost of LIGA process, LIGA technology to be widely used. Although the laser LIGA technology in the processing of micro-aspect ratio of micro-carrier than the poor, but for the general micro-processing is completely acceptable. In addition, the 3000mw laser pointer LIGA process does not require chemical etching, but "direct writing" etching, there is no chemical corrosion of the lateral infiltration corrosion effects, and thus the edge of the processing steep, high precision lithography performance is better than synchronous Carrier lithography. It is a kind of processing technology derived from the advanced rapid prototyping technology of stereolithography (SLA) process applied to the micro-manufacturing field. Because of its high precision and miniaturization, it is called microstere- Olithography or mSL). Compared with other micro-processing technology, micro-lithography is the biggest feature is not limited by the micro-device or system structure, shape, can be processed free-form surface, including any three-dimensional structure, and can be a different micro- Eliminating the need for micro-assembly links, in addition, the technology also processing time is short, low cost, the advantages of automatic processing, micro-mechanical batch production to create favorable conditions. The limitations of this technique are twofold: low accuracy, the current level of precision based on rapid prototyping of micro-processing technology in the highest horizontal direction of about 1mm, while the vertical direction of about 3mm, obviously this accuracy can not be integrated with silicon-based micro- Processing technology compared. The use of materials subject to certain restrictions, the current resin material in electrical performance, mechanical properties, thermal performance and silicon material compared to a certain gap. In recent years, 20000mw laser pointer micro-lithography technology has been vigorously research and development. In the improvement of precision and efficiency, the following development direction: to surface exposure instead of point exposure, thereby further reducing processing time and improve production efficiency; in materials, research and development of a higher resolution of light-cured resin, such as has developed double Light near-infrared photopolymerization resin for high-precision manufacturing has laid a good foundation; in the process, research and development without any support structure or sacrificial layer of the process and the integration of planar micro-processing technology to further simplify the process to improve processing accuracy and production flexibility . In both parts of the cured microform, the solid material is deposited from the gas phase onto the surface of the substrate by a chemical reaction. Laser-assisted chemical vapor deposition is used to fabricate a three-dimensional microstructure by heating a focused laser microbeam through a localized substrate to initiate and maintain a CVD process by moving the substrate or burning laser pointer beam during deposition to a high solid structure Resolution sedimentation plasticity. Shaping geometry from the plane projection and plane scanning limitations, to produce complex geometry of the three-dimensional micro-structure. The desired microstructure can be made by moving the workpiece table in a particular manner and keeping the laser focus motion velocity constant at the same crystal growth rate.
    552 Posted by Faker Cool

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