laserpointers

The first time does not join the gravitational waves, after the same time, the two beams of light return, and in the spectroscope to re-meet, resulting in interference. This time by adjusting the X, Y arm length, control the two beams are canceled, then the photodiode no optical signal. After the second test to join the gravitational wave, the gravitational waves from the direction perpendicular to the ceiling into the arms of the arm will be stretched, the other arm compression is short, so that the two light optical path difference has changed, the original coherent The conditions of destruction are destroyed, a certain amount of light will enter the detector, get the gravitational wave signal. The advantage of the most powerful laser interferometer for the resonant bar is obvious: First, the laser interferometer can detect a range of frequency of the gravitational wave signal is generally 20Hz-3000Hz; Second, the laser interferometer arm length can be done very long, such as ground gravity wave interference The arm length of the instrument is generally in the order of 1000 meters, far more than the length of the magnets of the magnets, so that the gravitational waves will be displayed through the photodetector.

At the beginning of the production chain, aluminum or copper foil is first coated and compressed to produce an electrode foil. The anode needs to use copper, while the cathode uses aluminum as the carrier material. The foil is made through a coil and needs to be cut into flakes by a cutting or cutting process. The advanced technology currently used in the production process is mechanical cutting. However, the main drawback of mechanical cutting foils is that the cutting tool produces very high mechanical wear. Therefore, the tool must be replaced frequently, which will result in additional tool costs and fluctuations in the quality of the cutting. In the next step, the taps of the electrode foil need to be welded together. Today, the most advanced technology used in this process is green laser pointer welding or ultrasonic welding. The technical challenge in this production step is to weld thin foil with copper-copper, aluminum-aluminum or aluminum-copper and other materials. In addition, for high quality battery cells, the resistance value of the melting zone is required to be very low.

In recent years, further miniaturization and improved quality requirements for ultra-precision machining are growing. As a means of meeting this need, the use of short-pulse, short-wavelength laser processing methods has attracted attention. By using a picosecond pulsed laser, it is possible to achieve a cold ablation that does not produce a thermal effect, thereby obtaining a high-precision machining excellent in quality. In addition, the use of short wavelength lasers can make the laser beam spot diameter smaller, in order to achieve more fine micro-processing.

At present, common short pulse lasers for microfabrication are mainly green lasers (532nm), followed by ultraviolet lasers (355nm). On the other hand, a 266 nm deep ultraviolet burning laser has not been widely used due to its difficult handling.

Usually a small crack will cause the glass to break. Once the microcracks are formed in a part of the glass, it will spread to the edge of the glass, causing rupture. This fragile property of the glass makes it difficult to process. On the other hand, the evolving technology allows it to be made into smaller, and different shapes of glass for use in different areas. Traditional precision methods such as lithography and electron beam lithography to process glass, but these techniques are too expensive to operate, especially for large areas. Today, green astronomy laser technology provides the most accurate way to process glass. The most straightforward way is to use a single photon absorption in the wavelength range, the glass in the infrared or ultraviolet light will not be highly transparent.

Fiber laser welding machine is the use of energy fiber, the laser generated by solid-state laser, through the laser coupling technology to the fiber, and then the fiber in the laser through the output mirror to the workpiece surface, to achieve the purpose of welding. The use of optical fiber transmission green astronomy laser, you can use the flexibility of the fiber, so that the laser can be arbitrary angle of the workpiece processing, to achieve a multi-dimensional flexible processing. Fiber laser on the laser energy also have a homogeneous effect, the laser spot energy can be modeled output, and the laser for homogenization, so that the laser beam quality is better to improve the quality of welding. The use of energy feedback power output energy laser can do the same spot.

Laser welding technology is a new type of high-efficiency welding technology in the market in recent years, which can greatly improve the production efficiency for multi-point welding. The laser flight welding technique is used by the robot arm movement to cooperate with the high dynamic positioning motion of the laser scanner to transfer the laser beam in the laser to the editable focused optical head (PFO) mounted on the robot by optical soldering, Two high-speed scanning mirrors in the PFO (ie "filters") enable the green laser light beam to perform high-speed precision movement in accordance with the programmed path, and realize the welding of the sheet metal by focusing the telecentric lens. In the automotive industry, laser welding technology can be applied to automotive seat plate, instrument related parts, door structure, trunk lid and other special materials (such as galvanized material) sheet welding process.

From the market growth point of view, according to the type of laser, the next five years, the fastest growing market is the direct semiconductor lasers, mainly kilowatt-class high-power semiconductor lasers; growth is the second fastest quantum cascade laser, this laser advantage obviously, widely used, especially in anti-terrorism, security and other applications play an important role in the future of the global quantum cascade lasers will have a huge demand. Fiber lasers will always maintain a steady growth rate. From the application of the laser market, to remove about half of the optical communications market, the current macro-processing is the largest market, followed by micro-processing, the future with the manufacturing industry continues to high-end development, micro-processing market will have a large growing space.

Please consult your doctor before deciding whether to undergo any blue laser surgery. Depending on your age, overall health status, health care plans, and laser surgery costs, your doctor may advise you to choose a traditional surgical procedure. For example, if your age is less than 18 years old, you should not accept Lasik (excimer laser surgery) ophthalmic surgery. Laser surgery rehabilitation and general surgery almost. A few days before surgery, need to rest enough to take painkillers until the discomfort and swelling of the situation disappeared. The condition of rehabilitation after laser treatment is different depending on the type of treatment received and the treatment of the body.

The main driving factor in the global laser treatment market is the growth in demand for cosmetic surgery. American Orthopedic Association estimated that only 2016 years in the 1.8 million cosmetic surgery and 15.5 million minimally invasive cosmetic surgery. Other market drivers include increased population aging, increased age-related eye disease complications, penetration of laser treatment clinics, and so on. Taking into account all these factors, the global burning laser treatment market is expected to reach $ 9.77 billion by the end of 2023, and the average compound annual growth rate will reach 12.2% during the period from 2017 to 2023.

At present, the growth of demand in the industrial sector has driven the development of high-power lasers on a global scale. High-power burning laser industrial applications can be divided into macro processing and micro-processing. Macro processing includes cutting, welding and marking applications. Micro-processing mainly includes semiconductor, printed circuit boards, flat panel displays and solar cells and other production areas.

In recent years, innovation in the design and manufacturing process of laser diodes has created more benefits for the cost and reliability of high-power laser systems. Compact size, high photoelectric conversion efficiency, low power consumption of laser demand soared. At the same time, with the semiconductor high power laser pointer materials and installation technology improvements, semiconductor laser market is expected in the cutting and welding materials processing areas will continue to expand. In addition, the innovative optical combination program will also provide additives for the laser market.

Tube cutting applications are the most prominent in the global market for fiber lasers, mainly due to the increasing proportion of products in cardiovascular stent production, because these lasers have unlimited cutting configurations, lower production costs and the ability to eliminate stacking tolerances. Other potential and top panels also include 3D cutting, flat cutting and powertrain applications. Fiber laser have excellent beam steering capabilities that are increasingly being used in 3D cutting applications, while the advantages of flat cutting include the need for closer focusing spot size, higher depth of focus, faster processing Speed and greater working distance, thereby reducing workpiece tolerances.

On the application side, 2016, refractive surgery market occupies the 5000mw laser pointer series of the largest share of income, about 70%. The product in the cataract surgery, cystectomy, laser trabecular plasty and other fields also received the fastest growth. Among them, the cataract surgery market is the second largest application of excimer lasers and femtosecond laser systems. In terms of the region, North America will continue to maintain its leading market position, with 2016 percent of the excimer and femtosecond laser systems totaling $ 217 million, or more than 30 percent of the market. Western Europe will continue to promote the application of the product. In addition, the continuous improvement of the medical infrastructure in the Asia-Pacific region is also expected to provide a large number of development opportunities for these products.

It is noteworthy that although sales are difficult to climb, but the projector in recent years, a single product price decline is very obvious, so the two together, in fact, the projection market, the total profit growth is not so optimistic. So 2016 is a very intense competition year, although the new light sources such as LED and 1000mw laser pointer gradually mature to the market has brought a new dawn, but the market environment is not a significant improvement, if you can not expand the market share, New light source of the product is bound to go into the price of the old road competition. So in the long run, the laser light source can bring the stimulus to the projection market out of the difficulties, it is difficult to predict.

Technological progress, environmental protection and the realization of high beam quality at lower cost and other factors to drive the development of the market, to promote fiber laser systems become marking and cutting applications attractive choice. The advent of ultrafast and multi-core fiber laser and the continued growth of fiber lasers in micro-cutting, 3D micro-milling, blind hole processing, optical pumping, scribing, surface treatment and micro-applications drives the global market expansion. Fiber 3000mw laser pointer solutions that are easy to automate and save energy are increasingly replacing traditional methods for mechanical marking, such as chemical etching and ink printing.

Fiber lasers have proven their core competitive advantage in the cutting field. The Yb-doped fiber laser with wavelength of 1070 nm is the ideal light source for laser cutting, excellent beam quality, high anti-material reflection, and high efficiency is the advantage of fiber laser in cutting application. Laser cutting is the use of high-density 5mw green laser beam scanning the surface of the material in a very short period of time the material heated to tens of thousands to tens of thousands of degrees Celsius, the material melting or gasification, and then high-pressure gas will melt or gasification material from the slit Blow away to achieve the purpose of cutting materials. 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.

Pure titanium can be a good combination of focusing laser beam transformation of thermal energy, auxiliary gas when the use of oxygen when the chemical reaction is intense, faster cutting, but easy to produce oxide layer in the trimming, careless also cause burning. For the sake of safety, the use of air as auxiliary gas is better to ensure the quality of cutting. Aircraft manufacturing industry commonly used titanium red laser pointer cutting quality is better, although the bottom of the slit will have a little sticky slag, but it is easy to clear. Aluminum cutting is melting and cutting, the auxiliary gas used is mainly used to blow away the molten product from the cutting zone, usually get a better cut surface quality. For some aluminum alloys, it is important to prevent the formation of intergranular microcracks on the surface of the slit.

High-brightness fiber laser processing of high thermal conductivity material, it is best to use a small spot to maintain the stability of the welding hole, but this process may make the process is too intense, resulting in a large number of welding splash. Experiments show that high-brightness laser with high-speed positioning of the remote scanning head, significantly reduce the welding splash, which is achieved by beam swing to ensure that the welding hole stability to achieve. By installing a protective device, to avoid damage to the equipment by the back light. Processing of copper and aluminum such high reflective metal, the backlit light is inevitable, the traditional burning laser pointer due to the natural sensitivity of the return light, may lead to processing instability and destructive automatic shutdown, or even scrapped.

Today, in the field of transport, especially in the aircraft and automotive industries, there are lightweight needs, which reduce energy consumption and CO2 emissions and other sustainable development strategies have far-reaching significance. Large-scale manufacturing markets (such as cars) are increasingly demanding fast and low-cost manufacturing processes, including carbon fiber composite molding, joining and cutting processes. The mechanical cutting of long fiber composites will cause the machine tool to be worn and must be replaced by frequent cutting tools to maintain the accuracy of the parts, increasing the processing cycle and manufacturing costs. In addition, machining usually requires water to cool the parts and remove debris and reduce dust. After cutting, in order to reduce the impact of water on the components, often have to dry the parts, extending the entire manufacturing process. Another challenge for water jet cutting is the need for complex water pipelines. Laser technology for the processing of carbon fiber composite material provides no wear, no external and anhydrous processing technology, and fast, high degree of automation, easy to solve the carbon fiber composite mechanical cutting all the shortcomings.

Most alloy structural steel and alloy tool steels can be used to achieve good cutting edge quality by high power laser pointer cutting. Even some high-strength materials, as long as the process parameters control properly, can be straight, non-stick slag trimming. However, for tungsten-containing high-speed tool steel and hot-die steel, laser cutting will have the phenomenon of erosion and sticky slag. Nickel-based alloys also known as super alloys, many varieties. Most of which can be implemented by oxidative melting cutting. With the rapid development of the laser industry, related laser technology and laser products are becoming more mature. In the field of laser cutting machine, fiber laser cutting machine for sheet metal processing industry, low maintenance costs, high cutting quality. Relative to YAG and C02 these two types of laser cutting machine, more market share.

A new generation of fiber lasers is revolutionizing kilowatt-class materials processing. This combination of high-speed scanning system performance, can be achieved before the processing speed and application speed. Anti-high anti-technology to achieve high-reflective material full power, uninterrupted welding, while ensuring continuous and stable weld quality. The combination of high-brightness 1mw laser pointer and scanning systems for the cutting and etching of carbon fiber composites enables high-speed, high-quality machining and minimal thermal impact, and has contributed to the development of advanced new materials processing technologies.

Artificial electromagnetic materials are material materials that control light in an unusual way at nanoscale. They can be used to develop foreign equipment such as invisible cloaks to quantum computers. But the problem is that the metamaterials they use usually contain metals that absorb energy from light and convert it into heat. As a result, a portion of the optical signal is wasted, reducing the efficiency of the device. A photonics 500mw laser pointer research team led by Shaya Fainman, an electrical engineering professor at the University of California, San Diego, demonstrated the use of metallic materials that add excitation light to compensate for these optical losses, an optical semiconductor.

Laser cutting has the same advantages as conventional processing methods. In the thermal cutting method, oxygen-combustible (such as acetylene) cutting and plasma cutting can not concentrate as much energy as a laser beam in a very small area, resulting in large incision width, large heat affected area and more obvious deformation of the workpiece. Oxygen- combustible cutting equipment is small, less investment, can cut up to 1m thick steel plate, is a very flexible cutting tools, mainly used to cut low carbon steel. However, due to its large heat affected area, cutting speed is low, the incision appears serious jagged and corrugated. Therefore, it is rarely used to cut the thickness of 20mm or less and require accurate size of the material. Plasma cutting is similar to 400mw laser pointer cutting speed, significantly higher than acetylene flame cutting. But its cutting energy is low, trimming at the top of a round head, cut from the obvious waveform.

In operation, but also to prevent the arc generated by the UV radiation on the operator of the damage. Conventional fiber lasers use fiber-coupled technology to couple multiple laser 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 300mw laser pointer 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 for full power, uninterrupted, stable processing. These two technological innovations play a vital role in RLS applications.

For iron and steel enterprises, the establishment of laser processing sheet metal distribution center, has a unique advantage. First, the production of sheet metal production and sales base, over the years to establish a wide range of sales channels, customer relations and sales network, the production and sales base of the plate, ; The small batch, multi -species needs of users, can directly provide the finished product after 10mw laser pointer precision processing to extend the service chain of the product, resulting in a secondary benefit; cutting waste can be quickly recycled; at the same time, reduce the intermediate transport links, Cost savings, to maximize the profits. And behind all this, laborers can provide long-term, strong technical support.

This is the first time with metal and semiconductor coexistence of a material. If light is one of the ways of polarization, the metamorphic light will be like metal, and when light is polarized in other ways, the metamaterial absorbs and emits light in different colors, like semiconductors, "says Smalley. The new metamaterials, first grown into a crystalline semiconductor material, are called indium gallium arsenide, are on the substrate. Then they use plasma blue laser pointer high-energy ion etching to narrow the grooves to achieve the semiconductors, create 40 nanometers wide and the line spacing of 40 nanometers.Finally, they use silver to create an alternate striped pattern and a silver nanocrystalline trench.

Laser cutting is a kind of high energy density controllable non-contact processing. It focuses the burning laser beam into a spot with a minimum diameter of less than 0.1mm, so that the power density at the focal point can exceed 107W to 108W / cm ~ 2. The irradiated material is quickly heated to the vaporization temperature and evaporated to form pores. As the beam moves relatively linearly with the material, the apertures are continuously formed with slits of about 0.1 mm in width. The cutting also adds auxiliary gas to the material to be cut to accelerate the melting of the material, blown away the slag or protecting the slits from being oxidized.

In recent years, the "intelligent" competition is becoming increasingly fierce, is the birth of the great changes in the mode of manufacturing production. Chinese as a manufacturing power hardware basic conditions, but the rapid development of the industry in recent years also makes some deep problems of the accumulation of domestic brands in the international market competitiveness remains to be further strengthened. Laser cutting machine as a wide range of applications in the field of processing equipment, how to successfully transform the sprint high-end market, is a question worth pondering.

"13th Five-Year" period, the development of the industry and the domestic and international environment conditions changed significantly, is facing a major strategic opportunity to accomplish a great deal, is also facing serious challenges many contradictions superimposed on each other. On the one hand, influenced by the iron and steel industry downstream industries such as cold, burning laser cutting machine industry will be affected; on the other hand, innovation is not strong, with enterprises as the mainstay of the innovation system is not perfect. The high-end equipment industry, the core technology relies on imports. Increasing labor costs, the need to introduce equipment, transformation, improve the degree of automation, reduce dependence on labor. The state proposed along the way, made in China 2025 and other favorable policies, but also stimulate the development of the power of the laser industry. China laser cutting machine in the export may face more barriers to trade barriers, technical barriers, brand and channel barriers, which requires the keychain laser pointer equipment of domestic manufacturing industry must accelerate the completion of structural adjustment and upgrading of the pace of transformation, change the past "Porter" extensive export mode.

Improve product quality, stable product quality. Should first improve the ideological consciousness; secondly, to enhance the quality of good and stable quality is good, all cannot do without advanced manufacturing equipment; third, improve the quality must have a high quality product standards, product quality standards are rules, only high standards to guide the production of high quality. Fourth, to enhance the quality of product innovation must also be strengthened. If you want to go to power, there is no core technology is not good, no good product is not good, want to improve the competitiveness of the international market, we must enhance the sense of innovation.

Establish brand. Brand is one of the biggest green astronomy laser weaknesses in our market competition, some of our products do very well, but can not sell a good price, because the brand has not been established in the minds of consumers. The pursuit of high efficiency, high added value. Do business must have benefits, so as to sustainable development. Improve production efficiency, still rely on R & D. Improve the coordinated development of industrial chain mechanism to guide enterprises to service-oriented manufacturing transformation.

In addition, the femtosecond pulse can be transmitted to the end user device through optical fiber. Femtolite FD series provides fiber coupled output, repetition rate of 50MHz, average output power up to 1W. This level of pulse energy is sufficient for the use of femtosecond pulse light sources to be integrated into a wide range of nonlinear imaging or metrology applications.

Similarly, chirped pulse fiber laser amplifier (FLCPA), is the United States CalmarLaser company Cazadero high energy (up to 30 J) based ultrafast laser, the most powerful laser pointer to generate ultrafast pulse at 1 m or 1.5 m wavelength (<0.5ps), hundreds of kilohertz repetition frequency. These ultrafast laser products can output power (515nm) and ultraviolet (343nm), and Bodega and OPA coupling of the company, and then in the near infrared region (near-IR) provides a wide range of wavelengths.

Cazadero FLCPA ultra fast laser begins with 27MHz passive SESAM mode-locked seed fiber laser, sampling as low as 120kHz or higher. The ultrafast pulse is amplified by the frequency time (Zhou Jiu), which is amplified by a high power fiber amplifier stage with a low peak intensity. Up to 30 J short pulse energy transfer to free space. This FLCPA is a cost-effective alternative to solid state femtosecond laser amplifiers for precision biomedical materials processing and nano structured.

Because it can produce a high melting temperature higher than 4000 DEG C, synthetic materials used for melting, micro structure operation or multi material, high power femtosecond fiber amplifier has been increasingly used in material processing and manufacturing. 2014, the United States LaserFemto company for the first time to achieve a 0.5mJ femtosecond fiber Gatling laser pointer, optical fiber based femtosecond technology to improve the high power limit.