Analysis of Laser Cutting Industry Chain in China

Laser processing (including laser cutting, welding and surface treatment, etc.) is an advanced production technology. Chinese laser processing industry is marching forward, this term has become a high-tech laser real social productivity, "the development of high-tech, realize industrialization" has become a reality Chinese laser processing industry.
As a new type of light source, the laser has the characteristics of good directivity, high brightness, good color and high energy density. Laser based laser pointer industry is developing rapidly in the world. It has been widely used in industrial production, communication, information processing, medical and health, military, cultural education and scientific research. According to statistics, from the end of the fiber to the common bar code scanner, each year and laser related products and services market value of up to one trillion dollars.

The laser industry has formed a complete and mature industry chain distribution, upstream mainly includes laser materials and matching components, mainly for middle and supporting all kinds of laser equipment, laser application in the downstream products, consumer products, instruments and equipment. The domestic laser market mainly includes laser processing equipment, optical communication devices and equipment, laser equipment, laser, laser medical equipment, laser components, application lies in industrial processing and optical communication market, both of which occupy nearly 7 of the market share.
At present Chinese laser industry is mainly used in laser processing, medical and other industries, the field of scientific research and development accounted for 12%, accounted for 32% of the field of material processing, communications accounted for 12%, accounted for 14% of the information field, medical field measurement and other areas accounted for 20%, accounted for 9% and 1%. As of now, a total of 5 national laser technology research center, more than and 10 research institutions; 21 provinces, municipalities and the production and sales of green laser pointer products, perennial styling products production and sales, and formed a certain scale of unit more than and 200. The domestic laser industry has formed a complete industrial chain, which is composed of laser crystal, key components, matching kit, laser, laser system, application and development, public service platform and so on.
Laser processing industry in China can be divided into four industrial zones, the Pearl River Delta, the Yangtze River Delta, central China and the central Bohai region. With the emphasis of these four industries, the Pearl River Delta in small and medium power laser processing machine, the Yangtze River Delta with high power laser cutting welding equipment, Bohai high-power laser cladding and solid-state laser, led by Wuhan, the central region is covered with large, medium and small laser processing equipment. With the transformation and upgrading of China's manufacturing industry, some of the old industrial base and small business base, began to transform the high-end manufacturing sector. For example, the Wenzhou laser industry cluster and Anshan vigorously develop the laser industry, etc..

Since the "65" countries have given special attention to laser technology, so there is today's booming China's laser industry. Now, the development of laser technology and industrialization in the world is very fast. Mature technology is more and more mature in gas lasers and applications. In the field of solid state lasers, new materials are emerging, and the new burning laser pointer technology is also developing. To keep up with the pace of development in the world, to provide technical support and Everfount talents for China laser industry support, we must strengthen the construction of laser technology innovation base, especially the construction of innovation base.
To maintain the technological development trend with the international advanced level, and to break through some key technologies to solve the bottleneck restricting the development of laser technology industry in China. Closely integrated with the main battlefield of the national economy, the transformation of scientific and technological achievements, commercialization as the core, focusing on the key technologies to solve the laser unit device, system integration and processing technology. Increase the development of new products, to provide technical reserves for industrial development.
For laser cutting and laser welding, using optical devices, optical system and laser processing equipment components, to provide new technology, new design and new prototype, fast flow CO2 laser, focus on the development and production of high power all solid axis YAG laser, new mobile laser processing machine and laser composite welding technology. The specific measures are as follows: to establish a research platform of common technology for automobile plate cutting and welding metallurgy of steel roll; broadband heat treatment, surface cladding, laser welding of steel in metallurgical industry equipment, laser texturing equipment; underground pipelines of high power laser pointer processing in petroleum industry. The localization, serialization, generalization and standardization of key common technology and related equipment. To establish a new type of laser research and development platform, through the introduction of foreign fast axial flow CO2 laser technology, improve the domestic high power CO2 laser production capacity and product quality, based on the absorption of CO2 laser has introduced a high quality, high stability and high power. Focus on the development of RF excitation, fast axial flow CO2 laser and more than million kilowatts, the development of multi wavelength high power solid-state laser (>1kW), 100 ~ 1000W laser diode pumped solid laser and ultraviolet band. Focus on the development of pump modules, and strive to build a more comprehensive DPSSL production base in the country.
On the basis of many results obtained by the past, in recent years, the research on the three levels of system integration and application, high stability of laser and laser model and Realization of industrialization has made a breakthrough, but the industry still needs to solve the problem.
Integration and development of the system integration and development of the core of Wuhan laser processing industry. System integrator is a region, a leading industry development, only the strength of the system integrators grow, the entire industry can be driven up. Integration of system integration is the purpose of each enterprise has its own characteristics and advantages, there is a certain competitive relationship between each other. According to the characteristics of the current system integrators, may wish to set up solid 50mw laser pointer equipment, laser cutting equipment, laser medical equipment, large-scale laser processing equipment and laser processing stations and other forms of system integrators, owners of existing enterprises become the company's investment, in the process of integration of the existing system integrators, the government should play a good intermediary and service roles, create opportunities for enterprises to mature conditions on listing and financing, further optimize the structure of property rights, to lay a good foundation for further development.
Perfect supply chain was born and grow a number of parts suppliers with core technology. The basis of an industry is supported by many parts suppliers. For the Wuhan area, so the parts suppliers should include group optical devices (such as optical lens, focusing lens, reflector and optical fiber etc.), precision machining, laser power and precision of electronic and electrical etc.. At the same time, these parts suppliers should have the core technology of the field, which is important to promote the whole laser processing industry. Supporting enterprises is the basis of an industry, in particular, to master the core technology and have independent intellectual property rights of supporting enterprises, to promote the role of industrial development.

The introduction of a high starting point of digestion, encourage the development of a number of supporting enterprises is the first to encourage enterprises and research institutions cooperation, which is more efficient way; secondly, enterprises should focus on the development of technology trends, continuous innovation; third, development of government through the science and technology project plan arrangement, tax policy and other means to encourage supporting enterprises. Increase market dynamics, which requires systems integrators in the promotion of 1mw laser pointer processing technology and the establishment of market networks have greater investment, including in a certain time to open up overseas markets. Through the promotion of the application, technical radiation and personnel training, in the domestic establishment of laser processing demonstration application of the sub center, processing station, joint venture company, to promote the development of laser processing industry in china.
Capital platform domestic capital: the diversification of equity investment, the introduction of listed companies, state-owned investment companies, private capital; foreign capital: in Wuhan, Optics Valley, China, the proportion of foreign investment in the field of energy optoelectronics is very small. The introduction of foreign capital can start supporting industries to foreign investment, after all the technical advantages in most related with energy photoelectron matching field, and unlike the investment investment system supporting the integration as big; foreign: the proposed state and local governments to establish regional laser processing industry and the increase financial support strength, making full use of the structural characteristics of domestic the economy and society with high efficiency as the goal, application of advanced manufacturing technologies, high efficiency 5mw laser pointer, laser processing production line design and manufacturing with international leading level. The introduction of foreign advanced technology and capital, the establishment of a number of production lasers and complete sets of equipment joint venture, in order to improve the level of laser products.
http://laserman123.beon.ru/0-2-osram-semiconductor-laser-bar-to-break-the-brightness-record.zhtml
http://vse.vdome.ua/13056-present-situation-and-development-trend-of-fiber-laser-technology-in-china.html
https://www.eventbrite.com/e/for-selling-all-kinds-of-laser-pointers-with-low-price-tickets-30113746025

Industrial Applications of Micro Lasers

The combination of silicon materials and light emitting semiconductor materials is expected to help develop a new micro scale laser pointer, which is studied by Keh-Ting Ng Doris and colleagues at the Data Storage A*STAR Institute.

Silicon material completely changed the form of electrical equipment manufacturing. This semiconductor rich is easy to be processed into small components, such as transistors, and method which is used can be extended to the level of manufacturing industry, which makes the production of tens of thousands of components can be integrated on a single chip. Electronic engineers want to further expand the capabilities of these integrated circuits, so that they can create, process and detect light.
These optoelectronic devices can speed up the processing speed of digital information, and can realize the micro scale laser, for example, can be used in bar code scanner. The problem, however, is that the silicon material is not an effective light generator. Ng's team has designed and produced a combination of silicon and light emitting semiconductor green laser pointer, which are indium gallium arsenic compounds (InGaAsP). "Our results show that this method can achieve a high efficiency and compact active optoelectronic device for silicon substrate, that is, using a very thin III-V family of semiconductor silicon layers," Ng said.
One of the important considerations in any laser structure is the ability to capture light within the structure, namely, the ability to capture light in order to further drive the generation of light. In conventional lasers, this is achieved by placing a mirror on any side of the light producing area. Instead, Ng and the team used a cylindrical geometry device. This will capture some of the light that is generated on the wall of the device and force it to spread within the cylinder. This is called whispering gallery mode, because the same effect will occur in a circular room, such as the dome of the cathedral in the sound wave.
The team started using a silicon substrate, they deposited a thin layer of silicon oxide. Thin film with optically active InGaAsP, only 210 nm thick, is individually made, and then bonded to silicon oxide. Then, the team through a number of materials to create the cylinder, with two or three microns in diameter. Three micron devices emit a 30mw laser pointer light at a wavelength of 1519 nm, which is very close to the wavelength used in commercial optical communication systems.
This device has a unique feature that extends the whispering gallery mode to the silicon and InGaAsP regions. InGaAsP can provide light amplification, and silicon can be passive guide light. "The next step, we want to apply these ideas to the devices at room temperature," Ng said. "Operation at higher temperatures will require adjustments to the design and fabrication of the laser."
http://laserman123.tsukuba.ch/e300888.html
http://laserman123.i-ra.jp/e993058.html
http://laserman123.hama1.jp/e1546170.html

Application of Ultrafast Fiber Lasers in Special Materials

The market for fiber lasers is further enhanced by new applications compared to the market share of conventional lasers. Researchers are also applying ultrafast fiber laser pointer technology to multi-user applications, such as the Stanford SLAC National Accelerator Laboratory in Stanford and the Lawrence Berkeley National Laboratory in Berkeley. All in California. The development of synchrotrons and free electron lasers (FELs) has provided researchers with access to brighter, shorter X-ray sources. Over the years, the Stanford Synchrotron Radiation Source (SSRL) provides X-ray pulses to study the molecular and crystalline structures of materials. Recently, a "low-alpha mode" of research and development, X-ray pulse can reach 1 ps.
At the same time, the linear accelerator coherent light source (LCLS) at the Stanford Linear Accelerator Center (SLAC) provides sub-100 femtosecond pulses with approximately 1012 X-ray photons at wavelengths as short as 0.15 nm. These ultrafast fast X-ray pulses, coupled with high spatial and temporal coherence, enable research in new scientific fields ranging from 3-D imaging and important biomolecular dynamics studies to characterization of instantaneous state studies of matter.

In synchrotrons and free electron high power laser pointer (FELs), energy is transferred by a beam of electrons in a changing magnetic field. The electron travel path is affected by the array of polarities that transform the polarity, bending back and forth, resulting in the release of energy in the form of light. In the case of synchrotrons, the laser is spatially discontinuous. Typical pulses are 100 fs, but free electron lasers (FELs) emit a strong spatially coherent beam of light with pulse widths as short as tens of femtoseconds. In order to operate at a stable X-ray wavelength, the electron beams must be tightened so that they are coherent with the emitted light (effectively achieving stimulated emission).
Because the free electron laser FEL has no cavity and is a single pass device, a very bright laser beam is required to achieve gain saturation. Sometimes this is achieved by using a conventional ultrafast laser source (such as Nd: YLF or Ti: sapphire) to excite the photocathode in the accelerated radio frequency region, acting as an electron injector. Locked by the ultra-fast laser to get the master clock synchronization signal. The master clock is controlling the linear accelerator.
In addition, a number of synchrotrons around the world, using traditional ultrafast light sources, time-resolved beamlines have been developed to implement pump detection-studies. However, for each of these structures, a major drawback is that traditional solid-state ultrafast amplifiers typically consume huge optical platforms and require routine maintenance to ensure optimum performance.
Aaron Lindenberg, a Stanford professor at the Stanford Synchrotron Radiation Laboratory, used Calmar's Cazadero family of one-touch ultrafast fiber lasers to overcome this problem. Designed for use in OEM medical and microelectronics processing, the 2000mw laser pointer is compact, small, simple to set up, easy to install, and easy to adjust the beam. In addition, its high pulse energy (up to 20uJ <500fs) and high repetition frequency play the edge of the Stanford Synchrotron Radiation Laboratory. A good time-resolved time-resolved study is achieved.
In Lindenberg's preliminary experiment, an ultra-fast fiber laser operating at 1.28 MHz has been successfully phase-locked to a 476-MHz RF signal from a synchronous accelerator (Figure 1) with timing jitter less than 1 ps and is used directly Measure the X-ray pulse width. Figure 2 shows the direct measurement of the synchronization pulse in pulse X-ray mode. In the experiment, the 1030nm output light of the 50mw laser pointer is locked into the barium borate crystal by 500nm visible light generated by autocorrelation. The detected mixing signal is 340nm. Record the shortest pulse width ~ 3ps.

The optical synchronization and X-ray pulses ensure a special pump detection experiment. A high-energy pulse pumped or excited by the output of a fiber laser system induces a physical or photochemical conversion. Such a change is then detected at the atomic level by the X-ray pulse of the synchrotron. This dynamic process can be used to generate x-ray images of changes in atomic mass structure by the arrival times of different pulse detectors. This approach is being used to obtain a better understanding of the excited state dynamics of nanosystems, and also to distinguish them from their corresponding bulk structures.
In a recent study, Lindenberg's team used the 5mw laser pointer light source in a nanocrystal silver selenide system to successfully capture X-ray structural changes that occur during ultrafast times. While these preliminary studies are very encouraging, in order to further improve the signal-to-noise level, improved detector and sample delivery systems are now being developed. Future research is expected to deepen into the development of unique catalysts and more efficient photovoltaic materials.
At Lawrence Berkeley National Laboratory, Cazadero was also chosen to ensure the development of a light source called "next generation light source". In this case, the laser is again phase-locked, but is used to irradiate the cathode to produce an electron beam, which is accelerated to the high-energy RF cavity. This system has been developed as an electron injector for the next generation of light sources.
The next-generation light source is a free-electron laser that produces X-rays to the electron energy level of a thousand electrons and is the only work in the megahertz repetition rate. With the choice of cathode material, the laser will work in the basic wavelength of 1030nm, the second harmonic 515nm, or fourth harmonic 257.5nm. "Choosing a cathode burning laser pointer system is critical to the design of the machine used to support user equipment," said Howard Padmore, lead author of the Lawrence Berkeley Advanced Light Source Experimentation Group. "We can not tolerate any intervention on a daily basis, Cazadero is a provider Repeatable, stable operation, a simple on / off switch, and it provides all key specifications such as average power, repetition rate and pulse width for different types of cathodes and frequency locking.High-repetition-rate, high-brightness X-ray source for next-generation light sources, dynamic imaging, a wide variety of system configurations, and the development of new non-linear X-ray spectra.
http://articles.org/laser-cutting-machine-advanced-material-cutting-method/
http://marketwithkris.com/posts/view/3463#/
http://www.ibosocial.com/laserman123/default.aspx

The First Photonic Neural Morphology Chip with Laser Power

The research team at Princeton University in the US has developed the world's first photonic neural morphology chip and demonstrated that it can be calculated at ultra-fast speeds, according to the MIT's Technical Review website. The chip is expected to open a new photon computing industry.
Princeton University Alexandre Tate team's new achievement is the use of photons to solve the neural network circuit speed limitation of this problem. Neural network circuit has been in the field of computing storm. Scientists hope to create more powerful neural network circuit, the key is to create a circuit that can work as neurons, or nerve morphology chip, but the main problem is to increase the speed of such circuits. Photon computation is the "star of tomorrow" in the field of computational science. Compared with electronics, photons have more bandwidth and can process more data quickly. However, photonics data processing systems have a high manufacturing cost and have not been widely adopted.

The core of the photon neural network, developed by the team, is an optical device in which each node has neuron-like response characteristics. These nodes are in the form of miniature circular waveguides etched into a silicon substrate in which light can circulate. When light is input, the output of the 100mw laser pointeroperating at the threshold is then adjusted, in which small changes in incident light can have a significant effect on the output of the laser.
The principle of this optical device is that each node in the system uses a certain wavelength of light, a technique known as wavelength division multiplexing. The light from each node is fed into the laser, and the 2000mw laser pointer output is fed back to the node, creating a feedback circuit with non-linear characteristics. The extent to which this nonlinear behavior simulates neural behavior has been shown to be mathematically equivalent to a device known as the "continuous-time recurrent neural network (CTRNN)", which suggests that CTRNN's programming tools can be applied to more Large silicon photon neural networks.
The Tate team used a 49-node silicon photon neural network to model the mathematical problem of a differential equation and compare it to an ordinary central processing unit. The results show that the speed of the photon neural network is improved by three orders of magnitude in this task. The researchers said that this will open a new photon computing industry. "Silicon photonic neural networks are likely to be the 'vanguard of a larger, scalable silicon-based photonic system," Tate said.

Laser Radar to Explore Mars "Life"

NASA scientists looking for life on Mars, the biggest concern is that if one day found a trace of life, the results came back to see the pollution brought about by the Earth. Now with an upgraded version of the lidar LIDAR, both to solve the concerns of scientists, but also to explore more efficient.
This tool is called the Bio-Indicator Lidar Instrument (BILI). Branimir Blagojevic is now a technical expert at the NASA Goddard Space Flight Center, which originally served the company that pioneered the development of the device. At NASA, Blagojevic uses his experience and skills to turn this technology into a working prototype, proving that the instruments used to detect biological hazards in public places can also be used to detect organic matter on Mars. LIDAR works much like a radar, but it uses a 2000mw laser pointer to measure distances and determine the composition of airborne particles.

BILI is actually a fluorescent LIDAR, according to the fluorescence emission detection of chemical substances. NASA has already made extensive use of fluorescence-tagged sensors in climate studies, but they will soon apply them to planetary research. "If the space agency uses it, it will be the first," Blagojevic said. Because it can be a few hundred meters away from real-time detection of a small number of complex molecules, BILI can be NASA plans to launch in 2020, the next rover nose. This tool can be used to scan biomarkers in areas where the rover is difficult to reach, while avoiding sample contamination.
At present, Blagojevic expected BILI will be installed in the rover mast. First, the instrument will scan the dust on the Mars plume, once detected, it will execute the command, the dust shot two ultraviolet 500mw laser pointer, the manufacture of optical pulse. The light causes the dust plume to resonate or fluoresce. Then it only needs to analyze the signal, and with the database in the known marker for comparison can detect organic particles. This analysis also reveals the size of the particles.
"If there is a biomarker, it can be detected in the dust," Blagojevic said. "This provides an excellent supplemental life detection tool for use with more sensitive point-in -ductive mass spectrometers.BILI's detection uses only power and can quickly scan a wide area, which is a specialized sniffing of special particles Nose. "NASA plans to install BILI or its follow-up versions on spacecraft, which can significantly increase the likelihood of detecting biomarkers in the solar system. Blagojevic and his colleagues, the biggest challenge is to improve the existing burning laser pointer design. Their goal is to make BILI smaller and more resistant to action, more sensitive to more biological particles.
http://www.moviepilot.de/news/analysis-of-three-main-technical-features-of-laser-projection-180829
http://www.seniorcom.jp/blog/my_view/180195
http://www.hessenparty.de/event/new-york-for-selling-all-kinds-of-laser-pointers-with-low-price_31526.html

New Laser Detector

In brain surgery, the physician's eye movement back and forth between the display and the patient can affect their concentration. Scientists at several universities and hospitals in the UK have collaborated to develop a burning laser pointer detector that converts brain-cell spectral signals into audio, allowing doctors to distinguish between cancer cells and health by "listening," according to the New Scientist's website. cell. New technologies can help doctors complete faster and safer brain surgery.

A new laser detector in the last research based on the improved form. Before the detector can also help doctors identify brain cancer cells in the region, but only through the display of visual presentation. The new detector can be converted into an audio signal of the signal, so the doctor can "hear" cancer cells in the brain, which will focus on surgical site eyes. Participated in the study at Clyde University, Matthew Beck said that the new technology can accurately guide the signal, let the doctor "all eyes focused on the operation".
The working principle of 20000mw laser pointer detector based on Raman spectroscopy, to the brain cells from laser, and the reflected spectrum analysis, form a cell like fingerprint spectrum. The shape of the spectrum map can tell whether the cell is cancerous or not. The research team of the installation of a new software for audio signal detector, an important feature of the software can capture spectrum signals, and these signals into sound.
Preliminary test results show that, using only the ear, doctors rely on the laser detector to identify the healthy cells and malignant cells of the accurate rate of up to 70%. Beck said that although the accuracy rate than the 90% to see the spectral signal to be low, but they have the confidence to continue to improve through improvement.
For cancer patients, cancer cells are not cleaned will relapse and metastasis and resection of left hidden trouble, healthy cells, nerve function and damage, causing serious side effects. Next, they will seek an early clinical trial of the 500mw laser pointer detector to help doctors try to remove cancerous brain cells clean, and will not remove healthy cells.
http://blog.udn.com/Eyes123456/81015686
http://laserman123.blogruimte.nl/note/40865/introduction-of-common-control-system-of.html
http://www.tagtt.de/laserman123/archive/moment/picosecond_laser_is_the_future_of_3c_processing-529874

Britain Intends to Develop a Real Function of Laser Weapons

British Minister of Defense Fallon announced that the United Kingdom a laser directed energy weapons demonstration project has entered the final stage of approval, the project mainly to verify the feasibility of new 20000mw laser pointer weapons, so that the future development of the actual ability of laser weapons. According to the British Ministry of Defense, the pilot project, "Laser Demonstration of Weapon Performance Demonstration Equipment", will cost 30 million pounds (about 260 million yuan) to be implemented by the European Missile Group UK branch. And delivered by 2019 and used to carry out the relevant tests. The European Branch of the European Missile Group will use this equipment to evaluate the laser directed energy weapons in different distances, topography and weather conditions such as the ability to obtain and track targets, and different conditions may have on the accuracy of targeting, handling security impact.

A 10000mw laser pointer weapon is a weapon that uses high-energy lasers to precisely fire long-range targets or defend against missile attacks. At present laser weapons are not suitable for all-weather combat, fog, snow, rain and other weather conditions will have a greater impact on its performance, the atmosphere itself will interfere with laser emission, including the atmosphere will absorb laser energy, atmospheric disturbance will cause energy attenuation. The world's major military powers are developing laser weapons, but most are still in the concept of demonstration stage. The UK's blue laser pointer weapons demonstration project, the United Kingdom recently announced a number of national defense frontier technology development projects, one of the funds mainly from the British Ministry of Defense to establish a new innovation fund.

Laser Radar Assisted Shenzhou Eleven

The successful launch of two astronauts into orbit, will drive the Shenzhou eleven spacecraft to Tiangong two space lab straight away. Space rendezvous and docking of Tiangong two and Shenzhou eleven spacecraft is to build a "key space" step. Two aircraft to maintain a high speed 8 times faster than the speed of the bullet is not bad together, great difficulty coefficient. In order to verify the construction of a space station, the Shenzhou eleven spacecraft and Tiangong two will be 393 km altitude orbit rendezvous and docking, than the previous 343 km high orbit 50 kilometers, the docking mode is more close to the aircraft docked to the space station mode. Therefore, the "three magic weapons" to ensure the success of the rendezvous and docking, 100mw laser help astronauts successfully enter the Shenzhou eleven spacecraft and Tiangong two combination, began life in space.
Microwave radar can be connected to the ship towing Temple
Rendezvous and docking radar Chinese Aerospace Science and industry 25 hospital developed, like the realization of the two spacecraft in space rendezvous and docking "eyes". As a key sensor implementation rendezvous and docking mission, it has successfully completed the Tiangong-1 and the "eight gods" and "God nine" "God ten" Rendezvous and docking mission, pulling the temple and Shenzhou in hundreds of kilometers away from the "acquaintance", from "encounter" to "". The application of rendezvous and docking microwave radar is smaller, more reliable, to achieve the measurement of communication integration requirements, is the rendezvous and docking microwave radar family of second generations of products. According to experts, the second generation 5mw green laser products continue to measure performance of the first generation of products, its measuring range up to the Beijing rings a complete circle, to the length of a table, in the case of large span, the degree of precision ranging it can reach a common foot, can reach higher accuracy that is equivalent to the human vision test, the angle between two adjacent rows. The error of velocity measurement is less than that of an ant. Moreover, compared to the first generation, second generation products have been "downsizing" and "speak" and "impact" of the three major improvements: volume and weight compared with the original reduced, power consumption is reduced to the original 2/3; to realize the measurement of communication integration function, the silence of the "eyes" can also speak. At the same time, it can deal with the impact of high-energy particles, and further improve the reliability of the product.
High accuracy measurement of the target information in the middle and close range of the laser radar
The Shenzhou eleven spacecraft to catch up with Tiangong two, must grasp the real-time trace of the temple. Therefore, the two body are respectively provided with laser radar and optical imaging sensor, as with "piercing eye", even if the space then black also not afraid to find each other. Temple No. two is equipped withlaser 10mw radar target Chinese Dianke development cooperation, the Shenzhou eleven spacecraft is equipped with a laser radar host and information processor, the basic process of detection, is composed of a laser radar system installed in the Shenzhou eleven spacecraft on a laser beam, laser beam to Tiangong two after the return signal. The laser radar system according to the received signal return analysis.
China Dianke lidar Project Deputy Chief Wu Dengxi said, as one of the laser radar RVD key measuring sensor, will be in the near distance of target distance, angle, rate of change information such as real-time and high precision measurement, support navigation control system complete control task. Tiangong two portable laser radar target is loaded with the cooperation of special glass prism, can light signals from multi direction and large range of reflected laser radar, laser radar measurement with distance and angle of flight parameter, ensure that the spacecraft for precise docking. In the future, there may be multiple directions in the space station, which requires the aircraft from one to the interface to the interface for docking, so in the follow-up mission to increase the spacecraft around the fly test. At this time, the laser 20mw radar can also play a major role in the docking process has always been without blinking, to guide the spacecraft to control and protect the safety distance with the outstanding objects to maintain adequate.
Optical imaging sensor can accurately capture the interface and complete the docking action. When the eleven spacecraft Shenzhou and Tiangong two, more and more close, from a distance of 150 meters to the final completion of the docking, this stage of the technical difficulties and risks are high. At this time, the Temple No. two, the Shenzhou eleven spacecraft is still maintained a rapid movement, in order to precision docking together, a pair of sharp and precise "butt eye" -- essential in the 30mw laser Shenzhou eleven spacecraft rendezvous and docking with the optical imaging sensor (CRDS), in close close final Tiangong two, by the relative position and attitude measurement, accurate capture of the Tiangong two interface, complete the rendezvous and docking.
Chinese Aerospace Science and Technology Group five technical staff Gong Dezhu said that this mission, "docking eye" new upgrade in the sun, the stray light suppression ability, target recognition sensitivity has increased dramatically. In space, the intensity of the sun's radiation is 3 to 5 times the earth, will affect the performance of the optical sensor, and even in the rendezvous and docking is very easy to flash bad. Rendezvous and docking in the past to select the appropriate timing of the light, grab the most appropriate hours of the day, the window period". The two temple and Shenzhou eleven spacecraft can realize quasi all-weather real-time docking, which will effectively support the spacecraft 50mw laser for emergency repair depot or emergency rescue astronauts in space. At the same time, the technical staff will be the first time the sensor capture time increased by an order of magnitude from the original about 10 seconds to a few hundred milliseconds. The response time of the sensor is greatly reduced from the sight of the target to the judgment. Chinese Aerospace Science and Technology Group Five sensor designer Liu Qihai said.

Scientists Have Discovered a New Kind of Soliton Wave

The application of Kerry Vahala in California Institute of Technology scientists led by the discovery of a new soliton, soliton wave behind the wave will follow in other media, like take a ride of other waves and draw energy from other wave. A soliton is a localized wave like a particle: when they travel through space, they keep their shape and shape, not like the other waves. They were first proposed in 1834 by the Scotland Engineer Scott Russel John, who found that a sudden stop in the union canal between Faure Kirk and Edinburgh formed an unusual wave. Russell tracked the waveform for one to two miles, and pointed out that it retained its shape in the course of travel until it finally lost its trace.

He called his discovery "mobile wave", to the end of this century, this phenomenon is described in mathematics, and ultimately the concept of soliton wave. Under normal circumstances, when the wave is transmitted through space, the wave will dissipate. Throw a stone into a pond, and when they are scattered from the point of impact, the ripples will slowly disappear. And soliton wave. In addition to water waves, solitons can occur in the form of 30000mw laser pointer light waves. Vahala's team studied optical solitons through the micro scale loop circuit called optical micro cavity so that the optical soliton infinite recycling. The application of soliton can be used to create high precision optical clock, and can be used for microwave oscillator, for navigation and radar systems, and many other applications in the scene.

But despite decades of research, a soliton has never been observed in the form of such a dependency is almost parasitic behavior. "In essence, this new soliton is to take on another solitons, in the wake of another soliton. It also siphoned from other soliton energy, so it is self-sufficient. It will eventually grow larger than its parasitic master, "Vahala said he was information Science and technology and professor of applied physics Ted and ginger Jenkins and applied physical sciences and engineering executives of materials science and applied science.

Vahala will this new soliton like pilot fish, is a carnivorous fish shark will swim in the side, they can pick up the pieces from shark food. And in the shark's tail parade, pilot fish reduced their own bodies of water resistance, so they can use less strength to walk. Vahala is published in "Nature Physics" magazine that announced the new types and description of the soliton co-author, known as the "Stokes solitons" ("Stokes", because of technical reasons, namely the soliton energy siphon mechanism) and is a graduate of California Institute of Technology and Yang Qifan Xu for the first time to observe new soliton. Since the soliton can be close to the shape and position of the original soliton, Yang Heyi's initial reaction is to doubt the laboratory instrument failure.

"By observing the signals of two spectrometer, we confirmed that the signal is not an instrument error. Then, we know this is true, and must figure out why a new soliton can occur spontaneously such a situation," Yang said, . Vahala and his team used include laser 3000mw input provides energy solitons microcavities. This energy is not directly determined by the "pilot fish" absorb Stokes soliton Instead, energy is "Shark" soliton consumed. However, Vahala and his team found that the energy is taken away by the pilot fish solitons, which increase in size while the other soliton contraction. "Once we understand the environment needed to produce new solitons, it is actually possible to ensure that our design microcavities formed solitons, and even its nature as an effective wavelength, color, etc.," Yi said.

Passive Laser Jamming Machine Capable of Protecting UAV

Foreign media Engadget reported that everyone is now scrambling to develop resistance to 30000mw laser pointer machine, but the UAV, used to protect the UAV? American company Adsys Controls developed a code for the passive laser jammer Helios signal, the device can interfere with laser weapons. If it detects an incoming laser beam, detects the characteristics of a laser beam, it can interfere with the other's signal to prevent the lock is locked, and in its own way to the person's body.

The company did not disclose the working principle of the equipment, it may be a counter laser. But one thing is certain: it is reliable because it is able to form a dynamic "continuous protection" for subsequent laser tracking, as compared with a short off signal ".
According to reports, Helios is not so fast will be able to market. Moreover, the principle is in doubt: a laser 3000mw can be actively capture mechanism in turn locked each other? In addition, the speed of system enough to support the completion of anti laser in seconds and? Any protection scheme will have effect, if the Adsys solution is not just speculation is better.

Progress of Epitaxial Chips to Enhance the Performance of Semiconductor Lasers

High power semiconductor laser key technologies include epitaxial growth of the semiconductor laser chip, the semiconductor laser chip packaging and optical alignment, shaping and laser technology integrated laser beam. The semiconductor laser 3000mw chip epitaxial growth techniques, epitaxial silicon structures research and design for the development of high-power semiconductor lasers play a crucial role, and therefore focus on the content of high-power semiconductor laser technology research.
In recent years, the United States, Germany and other developed countries to strengthen technical research investment of this technology, and has made significant progress, it is an international leader. Its recent research results in the following areas:
1, the use of aluminum-free active area effectively improved catastrophic optical damage the optical power density of the 100mw laser chip end surface of the output power and the life of the laser device has been significantly improved;

2, the use of strained quantum well structure, effectively improve the optical and electrical properties of high-power semiconductor lasers, expands the range of the emission wavelength GaAs-based material system, reducing the threshold current density of the device;

3, with the wide-waveguide large optical cavity structure design approach increases the size of the beam near-field mode, thereby reducing the output laser power density of the device, increasing the output power of the laser pumping and also make use of the device further increase in life expectancy.
Today, the semiconductor 1000mw green laser chip has been commercialized electro-optical conversion efficiency reached 60%, the electro-optical conversion efficiency of the laboratory device has reached more than 70%, believe that with further improvement of its technology. In the near future, the electro-optical conversion efficiency of the semiconductor laser chip will reach more than 85%.
http://www.everyonetobuy.com/best-10000mw-green-handheld-burning-laser-pointer-pen-flashlight.html

US Laser Pointer Weapon Against China Advanced Hypersonic Weapon

US Laser Pointer Weapon Against China Advanced Hypersonic Weapon
According to Hong Kong Asia Times Online reported that the Chinese military is developing offensive and defensive missiles in order to start a future US missile dominated by the conflict to prepare. For decades, Beijing's arsenal of ballistic and cruise missiles has been a steady development, a series of different ranges of the new system is deployed.
Reported that one Chinese missile program is a revolutionary hypersonic glide vehicle, it can fly above the atmosphere, and may be trying to penetrate the US strategic defense system during exhibit high mobility. China has long condemned the US missile defense system destroyed a stable situation. But last month, the Chinese Defense Ministry first recognized the military is developing a new type of missile defense systems. Defense Ministry spokesman Yang Yujun at a regular press conference to answer about the Chinese official ground-based midcourse missile interception test video image problem.
http://www.everyonetobuy.com/best-30000mw-blue-laser-pointer-flashlight.html
In the official report on China's efforts to build a missile defense system, the related Chinese missile defense systems and offensive anti-satellite missile association between it has been kept confidential. Analysts say these two things are closely intertwined. US Department of State for arms control, Assistant Secretary of State Frank Ross said, a missile launch conducted in 2014 - Beijing once called anti-missile test - in fact anti-satellite missile test.
China has already hypersonic glide vehicle DF-ZF conducted seven tests. US intelligence estimates, this tool will primarily be used for carrying nuclear weapons to penetrate weapon defense system. The aircraft can also carry conventional weapons. In hypersonic missiles, the US Strategic Command Cecil Doheny recently warned that the high-speed mobile missiles China and other countries pose a major threat.The Pentagon is studying ways to deal with hypersonic missiles, may be "de" system by means of a broader intercept and intercept their burning laser pointer weapons before the missile reaches five times the speed of sound cruising speed.

Blue Laser Pointer Can Light a Match
"Be careful to the 30000mw laser pointer, ask the children not to make the laser pointer as a toy!" Some time ago, the field experiment China experts, teach people to distinguish false.Among them, the people's livelihood quality laboratory expert service group field with a blue laser pen to start the experiment, in the light of the blue laser pointer, can actually light a match.

"Do not look down upon the hazards of the laser pointer." Experts and his assistant took out a blue laser pen, single point of power "as a solid light source new blue LED lamp, the light once entering one of the fundus, the damage of retina is greatly, so its Blu ray harm can not be ignored." In the end how much harm it? Experts and his assistant with a blue 20000mw laser pen aimed at matches, did not have a moment, even the match will be lit, "with a 1W blue laser pointer burst balloons, lit firecrackers in the demolition of gunpowder is very easy to do".
"Be alert to the laser pointer, ask the children not to make the burning laser pointers as a toy!" Experts give advice, he said, to be reasonable use of LED products, to avoid the harm of Blu ray, but the Blu ray is not equal to the harm is blue. According to the China electric light source quality supervision and Inspection Center (Shanghai) on the 27 LED lamp Market Sample survey results show that as long as the product diffusion cover intact, it will not constitute a blue light hazard. Experts believe that in daily life, to avoid the human eye long time to look directly at the surface of the light source, for the home of the weak awareness of infants and the elderly, should take measures to prevent the light source to the eye. Choose a diffusion cover (shield) of the LED lamp can decrease the damage of the Blu ray. Be careful not to use LED lamp shade is broken, not in the power supply has been shutdown for shade, not to take the diffusion cover lighting; choose single power is relatively small the LED lamp as the light source, and avoid light beads exposed directly or with transparent cover for the LED lamp; students with lamp color temperature choice is best not more than 4000K. The proposed election with warm white color light yellow as well.
http://www.mates.pl/profil.php?vardas=Eyes123456&action=blog&id=36608
http://www.reachoo.com/ads/77136785
http://www.stunbeauty.com/pin/11947/