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Recently, the State Key Laboratory of Transient Optics and Photonics, the Institute of Optics and Precision Mechanics, Xi'an Institute of Optics and Fine Mechanics, Chinese Academy of Sciences (hereinafter referred to as "Transient Room") has successfully developed a two-photon excited strongest laser pointer scanning real-time stereomicroscope. Microscopic methods and high-resolution two-photon excited laser scanning fluorescence microscopy combine to achieve high-speed stereoscopic imaging of three-dimensional fluorescent samples and are authorized for national invention patents.
Contemporary life science research has made increasing demands for optical microscopy - higher spatial resolution, greater imaging depth, and faster imaging speed. Especially for biological in vivo microsurgery, the scattering of light from biological tissue greatly increases the noise, which seriously affects the spatial resolution and imaging depth. In order to improve the imaging depth, two-photon excited 300mw green laser scanning fluorescence microscopy technology has been widely used in the field of nerve imaging since the 1990s, but its imaging method of point-by-point scanning has seriously restricted the imaging speed. Because the depth of view of the high-resolution optical microscope is very small, it is necessary to complete the three-dimensional imaging of the sample, usually need dozens of layers or even hundreds of layers of two-dimensional image of the superposition of reconstruction, image acquisition and processing generally takes several minutes or even tens of minutes Fast and real-time acquisition and display of three-dimensional images is very difficult.
Transient chamber super-resolution imaging team under the leadership of the researchers Yao Baoli and Ye Tong, the binocular vision principle and the Bessel beam to produce the expansion focal field, proposed by the four galvanometer composed of burning lasers for sale beam stereoscopic scanning device, The control of the three positions of the Beerle beam and the inclination of the Bezier beam is achieved, which breaks the limitation of the traditional laser scanning with only two degrees of freedom. By means of the optimal design and control of the three-dimensional scanning device, the three-degree-of-freedom fast scanning of the Bezier beam can be realized, and the double-view angle can be switched on the order of milliseconds to solve the double- Optical path at the same time imaging technology, for the first time to achieve a real-time laser scanning based on dual-view stereoscopic imaging and display system. The system can be three-dimensional dynamic imaging of the sample and real-time binocular stereoscopic observation, the three-dimensional imaging speed than the traditional point-by-point scanning method increased by one to two orders of magnitude. The two-photon 200mw green laser stereomicroscope system provides a new observation tool for 3D real-time imaging and display of living organisms.
"It allows us to view the dynamic 3D microcosm in real time like watching a three-dimensional movie without the need for light slicing without the need for time-consuming three-dimensional image reconstruction." Yang Yanlong so summarized the characteristics of this system, he is responsible for the design and completion of the three Scanning and imaging the key parts of the display. "Binocular vision imaging is a very efficient way to obtain three-dimensional information, but the existing 100mw laser pointer stereomicroscope, spatial resolution and depth of field are mutually constrained, and we use three degrees of freedom to scan the Bezier beam for nonlinear fluorescence excitation to break through this limit."
This research has been carried out from the basic principle verification, the key technological breakthrough to the prototype prototype, and has experienced all aspects of basic research to application integration under the support of the "100 people program" and the National Natural Science Foundation of the Chinese Academy of Sciences. At present, the research group is working with relevant scientific research institutions at home and abroad to carry out biomedical application of 30mw laser pointer cooperative research, as soon as possible to apply the technology to the biological in vivo three-dimensional rapid imaging and display areas.
http://prsync.com/htl/laser-technology-1437182/
http://laserman123.diarynote.jp/201702171759591624/
www.freePRnow.com/pr/global-laser-industry-usher-in-new-opportunities
What is the specific smart manufacturing, 100 companies may have a hundred solutions, but the core should be the concept of further sublimation of automation, until the flexible and intelligent. In the field of mechanical equipment, high power laser pointer processing equipment more easily automated integration, is the core of intelligent manufacturing equipment. Therefore, the laser and intelligent manufacturing how to perfect combination, is the future manufacturing upgrade important factor.
As the main provider of laser equipment, Han's laser in the field of intelligent manufacturing has long been the layout of its robot, machine vision, sensors, automation equipment and other intelligent, automated technology-related reserves of resources. Recently, Han's Laser Intelligent Equipment Group in Guangdong Province, Shenzhen, led the industry and more than the laser industry experts witnessed the opening, but also taken a step in the field of intelligent manufacturing.
In the specific application areas, Han's laser power battery manufacturing in the area of key layout. In the subsidy, limit number, environmental pressure and other factors under the influence of the electric car industry is booming. Its power source batteries, battery modules are the core components of electric vehicles manufacturing process to be introduced urgently, cheap laser pointer processing technology in this area promising. Han's vice president of huangxiang hu has said on many occasions, very optimistic about the future of laser technology in the field of power battery manufacturing prospects. According to Huang Xianghu introduction, Han's laser to build a new energy lithium equipment, closed-loop ecosystem.
At the beginning of 2016, Han's Laser Strategic Investment Holdings Dongguan Junzhuo Automation Technology Co., Ltd., which opened the Han officially entered the pack and module automation and equipment in the field of prelude. Subsequently, with the Shenzhen Municipal Science and Technology Co., Ltd. signed an agreement to invest in the acquisition of lithium batteries to achieve the welding and injection of seamless link. Since then, Han's Laser and Dongguan Zhuang Ling Automation Technology Co., Ltd. signed a merger agreement, which marks its entry into the field of lithium battery coating. In recent days, Han's new acquisition of Jin Fan Jin-fan laser, and further open up the power battery single, double coating equipment.
As a result, Han's laser successfully created a complete set of intelligent battery manufacturing solutions, but also for the green laser pointer technology into the field of intelligent manufacturing provides a good reference sample.
Scientists at the National Center for Quantum Technology (CQT) at the National University of Singapore have revealed that the shape of a photon can affect its absorption by a single atom. They say the finding is significant, suggesting that the photon's energy, or 5mw laser pointer wavelength, is no longer the only factor determining photonic behavior.
CQT chief scientist Christian Kurtsiefer and his research team have mastered how to accurately control the photon shape. "We usually do not think that photons will spread in space and time, and have a certain shape, but the photons we use in our experiments are four meters long," he commented.
The results were published in the November 29 issue of Nature Communications, using rubidium atoms and infrared photons. Each emitting a photon to a single alkali metal atom. "Our experiments study the most fundamental interaction of light and matter," commented Victor Leong, a Ph.D. student who participated in the study.
It takes 13 nanoseconds for a 4-meter photon to pass through such atoms. Whenever a photon passes through an atom, the team looks at whether or not the atom is excited. By recording the excitation time, the researchers can get the photon atomic absorption of the probability of time-varying relationship.
Two kinds of photons with different shapes of brightness increase and attenuation are studied. Hundreds of millions of 200mw laser pointer measurements lasting more than 1500 hours show that for both types of photons they are just over 4% absorbed by rubidium atoms. However, if the time scale from nanoseconds, each time the photon absorption probability and the shape of the photon.
CQT's team found that if the photon reaches the atom, the photon intensity after the first weak and strong, then the peak atomic excitation probability than the photon brightness of the first strong case of more than 50% higher than weak.
Researchers envisioned atoms more likely to absorb energy-boosting photons, explains Matthias Steiner, co-author of the paper, explaining that "the natural process of releasing photons by stimulated atomic decay causes this phenomenon. Atoms release an attenuated photon, In turn, imagine that the form of the equation does not change and that atoms will naturally encounter photons with increased brightness, and that the photons we choose to shape are inspired by the time - reversal symmetry of quantum mechanics.
The research team believes that their work helps to understand the use of 400mw laser pointer light and material interaction technology, "such as quantum communication, sensors, computing and other quantum technology involved in the process, usually need to use information into the photon atoms. "In order to design reliable quantum devices, scientists need to control this interaction, and you can use it only if you understand the interaction," says Alessandro Cerè, co-author of the paper.
The main conclusions are as follows: "We found that the process of light scattering is related to the photon's envelope.With the exponential decay of the envelope shape of the photon with time exponentially increasing with time, the envelope shape of the photon can more effectively excite the atoms.Using the exponential rise Shape of the photon excited atoms, which in a narrower time interval to produce a higher peak excitation probability of such synchronization will help the quantum communication network connection.
For owners, radar ranging is not strange. When driving at high speed, the radar range allows the car to keep the distance between the car and the car, the car will automatically move forward, the owner can not step on the accelerator. Of course, the direction must be controlled by the owner. Moreover, the use of radar range, the vehicle can also detect the front of the vehicle, and maintain their own distance; when the car is too close, it will automatically reduce the speed. So it seems that, although the radar range does not liberate the driver's hands, but at least one foot Liberation (foot on the accelerator), it can be regarded as a pioneer unmanned. However, radar range is not just used on the car. Lidar is so good, why do robots rarely use 300mw laser pointer radar to avoid obstacles?
The radar is "radal English" abbreviation, radio method discovery state parameters of the target and determine their space positions, and the distance of the target, ask and speed is mainly composed of antenna, transmitter and receiver (including signal processor) and a display part. If it is a bit more popular, the radar is similar to the eyes or ears, of course, it is no longer a masterpiece of nature. The principle of measuring distance is as follows: measuring the time difference between the transmitted pulse and the echo pulse, because the electromagnetic wave travels at the speed of light.
There are many kinds of radar, and the classification method is very complicated. Military radar. Can usually be classified according to the purpose of radar, such as early warning radar, search radar warning radar, command, artillery radar, radar altimeter, battlefield surveillance radar, airborne radar, radio altimeter, radar fuze, weather radar, navigation, navigation and collision avoidance radar control radar and IFF radar etc..
According to the classification of radar signal, pulse radar, continuous wave radar, pulse compression radar and frequency agile radar; according to the classification of angle tracking mode, a single pulse radar, conical scan radar and concealed conical scanning radar; target classification according to the parameter measurement, measurement of two coordinate radar, Gao Lei, three coordinate the enemy radar and recognition of radar, multi station radar; radar frequency according to points, can be divided into radar, microwave radar, millimeter wave radar and 5mw laser pointer radar. The radar has a day and night can detect, block and not affected by fog, clouds and rain, has the characteristics of all-weather, all day long time, advantages, and a certain degree of penetration so that not only become the military indispensable electronic equipment, but also widely used in other fields, such as weather forecasting, resource exploration, environment monitoring, even related to scientific research, such as research objects, atmospheric physics, ionospheric structure research.
Now, radar ranging is also used in the industry of the most current - robotics. So, what is the role of radar in the field of robotics? At present, how to apply the rate?
The application of radar in the navigation of mobile robot is more and more. This is mainly due to the many advantages of the laser radar range measurement technology, compared with other distance sensors, it can take into account both the accuracy and speed requirements. Work in the infrared and visible light, green laser pointer beam radar work called laser radar is a radar system to transmit the laser beam to detect the target position and velocity characteristics, laser radar provides a good method for robot navigation.
Some robots are free to walk, they use a remote control or pre programmed. The robot's "true freedom walk" should be able to identify the obstacle, by turning and stop the realization of active avoidance, and achieve independent route planning, laser radar is an important method to solve the bottleneck of the popularity of the robot obstacle.
In order for a robot to walk, one must first see it - in addition to the algorithm, as well as the important hardware. Laser radar allows the robot to emit burning laser pointer target detection signal, and then received back from the reflected and transmitted signals are compared for proper treatment, information about the target, such as target distance, azimuth, altitude, speed, attitude and even shape parameters. In fact, the robot is positioning itself, positioning objects, as well as map building. A hands-on ability of electronic production, spent half a year to create a full range of radar attack robot". The use of ultrasonic ranging radar, not only to identify where the master's shoes, but also to the owner of the shoes.
At present, the application area of laser radar is the sweeping robot, which is mainly to achieve the purpose of obstacle avoidance and automatic path planning. Now a number of entry-level sweeping robot, in fact, the process is relatively simple sweep, mostly only with the ability to clean the N font, including the coverage area is difficult to assess the coverage. According to the sweeping robot experts said that the fundamental reason is that they can not see, can not walk freely. At this time, the laser radar has played the role of sweeping robot eyes, so that it can achieve the purpose of cleaning.
Laser radar is so good, why is the market rarely see the use of high power laser pointer radar robot?
At present, in the world, in addition to some Chinese enterprises, only a few companies, such as Japan and Germany have the ability to produce laser radar, but its price is not low. General service robots can not afford such an expensive component. So expensive is also a reason, the general laser radar technology in the development of a certain degree of difficulty. Technically, the precision is good and achieve millimeter accuracy is not easy, want to achieve this precision, a big problem: the process precision, to achieve long-distance mm level accuracy of optical measurement technology and in fact are required. In fact, the price of speed, traditional laser rangefinder is not expensive, Taobao may be a few hundred dollars could buy one, but its measurement speed is very slow, it may take a few seconds to complete, and the need to complete the measurement of 100mw laser pointer radar, thousands of thousands of times in a second. So the price of traditional laser radar is also very expensive.
Fiber laser cutting machine is in recent years in the international market newly invented a new type of cutting machine, the cutting machine products in cutting speed, or in the mechanical volume have absolute advantage, today we mainly explain the main advantages of this cutting machine is reflected in what areas.
The new fiber laser cutting machine adopts the principle of cutting is a kind of high performance 300mw laser pointer cutter, laser ray emitted from the numerous high performance and high energy in the process of laser cutting, laser radiation generated by these huge energy, you can instantly cut surface evaporation, so it can easily be very hard interface removed. At present, this technology still belongs to a kind of cutting technology is the most advanced, without any other cutting process can surpass it, and this speed cutting process in cutting process is very fast, you can instantly be very thick steel plate and easy cutting, cutting accuracy is very accurate, the cross section of the cutting precision can reach several millimeters can fully meet the demand, cutting some high requirements.
The new fiber laser cutting machine adopts the principle of cutting is a kind of high performance laser cutter, laser ray emitted from the numerous high performance and high energy in the process of laser cutting, 50mw laser pointer radiation generated by these huge energy, you can instantly cut surface evaporation, so it can easily be very hard interface removed. At present, this technology still belongs to a kind of cutting technology is the most advanced, without any other cutting process can surpass it, and this speed cutting process in cutting process is very fast, you can instantly be very thick steel plate and easy cutting, cutting accuracy is very accurate, the cross section of the cutting precision can reach several millimeters can fully meet the demand, cutting some high requirements.
In the process we use fiber laser cutting machine, spread all the dissemination of information and energy is transmitted through optical fiber transmission, in this way the biggest advantage is to save a lot of manpower, light path any leakage phenomenon can not be generated in the transmission process. And before using the device without any adjustment of the light path, you can easily transfer energy to the laser.
The core components of the 5mw laser pointer cutter it is only one, that is the laser, and laser production volume is very small, not like other products of the same type as cutting occupy a lot of space, so that the overall mechanical volume will be reduced a lot, not in mechanical manufacturing or transportation process can reduce a lot of the manpower for us.