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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 present, when it comes to automatic vehicle environment awareness technology, many people will first think of lidar. Indeed, compared to on-board sensors such as cameras and millimeter wave radars, lidar has the advantages of high accuracy and high resolution, and has been widely deployed on many automatic test vehicles. But this technology also has its disadvantages: high cost can not be ignored, such as the Ibeo LUX 4 line blue laser radar, the price as high as $15 thousand, while Google announced that although at the beginning of its independent development of the laser radar can reduce the cost of 90%, each still $7500. Such a high price is clearly unrealistic for an eventual self driving car.

Therefore, how to find a lower cost environment aware solution has become the concern of many enterprises. Comparatively speaking, the vision navigation technology with "camera + software" is easier to achieve. Visual navigation, as the name suggests is through the visual camera to capture image information, to obtain the position and direction of moving objects in space and other environmental information, and the information obtained is dealt with by a certain algorithm, the environment model, and find an optimal or near optimal collision free path, to achieve safe movement to reach the destination.

Ultra-high-speed imaging technology provides researchers with the best view of the atomic world. Molecules and atoms in the space beating, spinning, seems to be dancing in the serious dance, they continue to twist until a molecular chain is broken, while the other happens to "click" card in place. From the theory of molecular structure so far, chemists use this imagination method has been more than 150 years. Now, these imaginations will become reality. Researchers use a series of techniques in the lab for the "director film" of the molecule.

The team uses a string of 40 fs long X-ray pulses for initial burning laser pointer bombardment, resulting in a diffraction pattern showing the atomic position. These diffraction patterns were made into a "film" and found that about 550 fs of laser light was stimulated by the sensitized yellow protein, and the isomeric phenomenon occurred. "This is a huge surprise because it does not exist only in the moment," says Petra Fromme, a biochemist at the University of Arizona, a member of the research team. "This completely changed our perception of this response."

The all-optical program to achieve particle acceleration has attracted a lot of attention in the past two decades with its potential advantage in dramatically reducing the scale and cost of accelerators. The plasma generated by the laser can maintain a very high acceleration gradient, whereby efficient acceleration of the charged particles can be achieved. In particular, in recent years, the use of tail wave field technology to achieve electronic acceleration has made important progress, the resulting particle beam quality and traditional accelerator produced can be compared. Efforts to accelerate laser-driven ion acceleration are also currently being experimentally achieved by the so-called sheath-field acceleration mechanism: the potential gradient in the sheath field causes the ions emitted from the surface of the 30mw laser pointer irradiated foil to be accelerated. The ion beam produced by this mechanism has some unique properties, but there are some limitations in terms of energy spectrum, dispersion and divergence angle, which seriously hinders their practical application.

Fiber laser development so far, high anti-material processing has been limited to the application of fiber lasers a major pain point. Especially gold and silver copper and other metal materials, low absorption rate, laser processing will produce a lot of reflected light. These reflected light, or cause fiber laser protection to shut down to cause waste, or directly damage the fiber 1mw laser pointer. QCW fiber laser due to its 5-10 times the peak power of traditional continuous lasers, you can instantly ionize the high anti-material, increase the absorption rate, reduce the reflection, with some high-reflective material processing. However, QCW fiber lasers only 1 / 10-1 / 5 of the average power of conventional CW fiber lasers, resulting in slow processing speed and expensive lasers. And the current QCW fiber laser on the ultra-high reflectivity of sterling silver can not guarantee a high yield.

Ultra-narrow linewidth lasers are used not only for atomic clocks but also for certain types of spectroscopy, coherent optical communications, and interferometric sensors. In addition to wavelength stability, phase noise is also important for these lasers. Phase noise is the deviation of the time-varying electric field of the 50mw green laser beam from the pure sine wave. In addition, the presence of phase noise limits the resolution of the system used by the laser; and the phase noise of this ultra-precision laser is difficult to measure.

Metal is a shiny, ductile material, therefore, most of the metal can be made beautiful, exquisite handicrafts or jewelry, such as gold rings, silver necklaces, iron products and so on. The starting absorbance of the metal pair of 10.6 μm brightest laser pointer beam is only 0.5% to 10%. However, when a focused laser beam having a power density exceeding 106 w / cm2 is irradiated onto the metal surface, it can be made in a microsecond time The surface begins to melt. The absorption rate of most metals in the molten state rises sharply, generally by 60% to 80%.

Today, with the change of economic environment, laser cutting machine market demand, between the various brands, manufacturers of the competition has been white hot. In this regard, we can feel a new project of laser cutting machine needs less, fewer people buy inquiry, the equipment is difficult, payment period, customers are not so straightforward and generous, "began to carp...... These are the "business" is not good in performance, if such "a pile of messy performance carry out to solve, it will make people confused. However, if the current 10000mw laser pointer cutting machine industry competition is summed up, it can be attributed mainly to the brand, price and channel, and the several aspects of the service competition.

Laser cutting machine brand differentiation is the core advantage or personality differences products into the brand, to meet the individual needs of target customers. The success of the laser cutting machine brand has a different characteristic, are different from competitors, then in a form consistent from beginning to end brand differentiation and customer psychological needs connected by way of brand positioning accurate information to convey to the market, to occupy a favorable position in the minds of potential customers. The purpose is to create and develop certain characteristics for their laser cutting machine products, distinctive personality, establish a unique image of the market, which is different from competitors, and effectively determine the products in the minds of customers in the neutral position. In laser cutting machine enterprises and products more and more homogenization tendency, more and more similar products, competition is increasingly fierce, in order to break through, the enterprise must according to the selection strategy for brand positioning of their actual needs, find the appropriate market position for their own enterprises and products.

As a young subject, laser technology has brought about great changes in human science and technology, production and life. Whether in processing, scientific research, biology, cutting-edge technology and other fields, has a very large application space, and therefore sustained by domestic and foreign enterprises and research institutions attention, technology development. Since 2016, laser technology has also made a series of major breakthroughs, the following inventory ten annual burning laser pointer technology progress.

Photon impact heating of nanoparticles was observed for the first time

Lucas Nowotny of ETH Zurich, Switzerland, led the research team, for the first time measured the photon and micro particles collision when the micro "shock" warming effect. The team used laser to limit the radius of about 50nm silica nanoparticles in the optical trap, the optical trap environment is a super vacuum chamber. The researchers used a method called feedback cooling process, which capture the particle's position is monitored, and the trap frequency accordingly modulation, pulling away particle energy and reduce the temperature of the particle to the micro level of Kelvin. In ambient pressure greater than 10e9, the minimum temperature of the particle temperature is determined by pressure. Under 10e9, no matter how much pressure, the minimum temperature does not change with pressure. This means that, at very low pressures, the dominant limiting cooling factor is the electromagnetic noise in the trap.

Over the past year, including the laser display, VR / AR, 3D holography, and other cutting-edge intelligent display technology in the multimedia audio-visual applications have high-light performance. 2016 is considered to be the first year of laser display, in the audio-visual industry is also homeopathic blowing a laser display cyclone. From the exhibition display to the conference center, from the command center to the stage performing arts, from home to theaters show ... ... the industry as the fourth generation of display technology, high power laser pointer display technology, application development momentum has been overshadowed LED, OLED.

Up to now, the laser display light source has three primary colors of pure laser, phosphor laser, laser hybrid light source (laser and LED hybrid) three categories, each light source has its own advantages and disadvantages. Contrast, the three primary colors of pure laser advantage is more obvious. Three-color laser is regarded as the most orthodox laser light source. It has the advantages of wide color gamut, high luminous efficiency, long life, low power consumption, good consistency, stable color temperature, safe and reliable maintenance-free and flexible application.

Although the laser from the date of birth, by the military's widespread attention, especially in the field of strategic anti missile. But because of the difficulties of the atmosphere, the optical attenuation, the heat dissipation and the target guidance, the development speed of the strategic high power laser pointer weapon is very slow. But since twenty-first Century, the U.S. military once again starting to focus on the development of high power solid state laser, which is used to perform short-range air defense and Antimissile Defence, warship tactical mission, and the U.S. military said a mysterious weapon again ahead of competitors.

According to the British "Daily Mail" recently reported that the world's largest manufacturer of Northrop Grumman radar is working with the US military, the next generation of supersonic fighters to develop new laser pointer weapons, the power of abnormal terror. The weapon system, known as the directional energy system, is primarily used for self-protection of fighters and is placed in a special installation. US military research laboratory revealed that this system is expected to be installed in 2019 in the US supersonic fighter, into the test phase.

Before the sacrifice of the "Golden Phoenix" Yu Xu, senior researcher at the Chinese Academy of Sciences in Ningbo, Zhang Wenwu has been thinking, what is the problem caused the aircraft accident. As the Ningbo Institute of advanced manufacturing technology research institute deputy director, in recent years, Zhang Wenwu led the research team, has been in the key technology of intelligent burning laser pointer processing research, and the core component of this technology will be used in the next generation of Chinese engine manufacturing.

This year, Zhang Wenwu made the team "turbine blade complex" Research on key technology of special film hole intelligent laser processing project, the National Natural Science Foundation of Zhejiang - the integration of the two support fund, provides the possibility for the cure of aero engine core components.

The day before the researcher Dr. Zheng Mingbin College of medicine of Guangdong Medical University and Chinese Academy of Sciences, Shenzhen Institute of advanced technology Cai Lintao cooperation, in the homologous drug loaded nano to make new breakthroughs and accurate visualization for cancer treatment, the development of "new treatment of cancer, cancer research recently in the field of Nanotechnology" ACS Nano "top journals published.

Zheng Mingbin, the research team constructed the encapsulation of indocyanine green (ICG) - cancer cell membrane biomimetic polymer nanoparticles (ICNPs), and applied to the diagnosis and treatment of breast cancer by homologous MCF-7. The expression of adhesion molecules on the membrane of cancer cells, such as epithelial cell adhesion molecules, N-cadherin, galectin, through receptor - ligand binding form to cancer cells each other "navigation" and "anchor". Nano particles wear vest to cancer cell adhesion molecule recognition MCF-7 adhesion cancer cell membrane, to avoid the effect of chemical modification to the target complex and potentially uncontrollable factors.

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.

The electron is a subatomic particle, belonging to a lepton. For a long time, because of its small quality (9.1x10-31 kg), fast (a week around the atomic nucleus only need 1.8x10^-16 seconds), although the use of a wide range, it is difficult to observe. In February 2008, a number of scientists from Sweden for the first time to take a single video recording, to achieve a historic breakthrough. However, want to shoot electronic solid inside, because the electronic large number and complicated environment is more difficult. Scientists have not found any direct observation for a long time. Until a few days ago, from the Okinawa Institute of Science and Technology Graduate University scientists use their "femtosecond camera" succeeded for the first time to take the material internal electron trajectory, once again to achieve a breakthrough. Since Thompson was discovered in 1897, scientists have tried to describe the motion of the sub atomic particles in many ways. Electrons laser pointer 5mw are too small to move too fast, not to say the naked eye, or even an optical microscope. So, how to measure the movement of electrons, stumped generations of scientists. However, Institute of Science and Technology Graduate University Okinawa femtosecond spectroscopy laboratory, so that human beings to observe the electronic movement of the goal of a big step forward.

For more than 30 years, the power and performance of carbon dioxide (CO2) lasers has appeared to be at an extreme level, and most consumers buy CO2 laser equipment in the range of 4-5 kW (and occasionally 6 kW). It took about 15 years to make 3kW CO2 blue laser pointer sales become common, and then spent five years to make 4kW products become the mainstream choice for end users. In fact, higher power CO2 lasers (6kW and above) have been available for many years, dating back to the 1990s. Although sales of high-power CO2 lasers have increased slightly in the 21st century, they have never been able to match sales of products that are close to 4-5kW.

For more than 30 years, the power and performance of carbon dioxide (CO2) lasers has appeared to be at an extreme level, and most consumers buy CO2 laser equipment in the range of 4-5 kW (and occasionally 6 kW). It took about 15 years to make 3kW CO2 laser sales become common, and then spent five years to make 4kW products become the mainstream choice for end users. In fact, higher power CO2 lasers (6kW and above) have been available for many years, dating back to the 1990s. Although sales of high-power CO2 lasers have increased slightly in the 21st century, they have never been able to match sales of products that are close to 4-5kW.

St Petersburg State Technical University, Department of Physics, Nanotechnology and Electronics, Moscow State Institute of Electronic Science and Technology scientists jointly developed optical radiator, which can improve the accuracy of laser 5000mw radar 10 times. This increase in speed can be used to scan shorter optical pulses in modern radiators, the St. Petersburg State Technical University Press Center reported. An optical radar is a device consisting of three main components for determining the distance: a radiator that transmits an optical signal (usually a laser beam), a receiver that captures the reflected signals of various objects around the radar, and a receiver which distinguishes it according to a characteristic difference, The time interval between the delayed signals is constructed around the terrain image data processing system.

Therefore, the shorter the pulse duration and the higher the power, the higher the range and accuracy of the radar. "We have reduced the pulse duration while maintaining the pulse power, which greatly improves the range and accuracy of the radar, which requires the development of a new element matrix and the use of a completely new electronic device" "Said Alexei Filimonov, director of the Department of Electronics.

The US Navy is likely to revamp its carrier's size, shape, technology configuration and mission characteristics after a careful study of the emerging global threat environment, US Navy officials have revealed, the US National Interests website reported Monday. Speaking of China's future laser pointer 1mw aircraft carrier construction will also consider these innovative factors, the military expert Li Jie in an exclusive interview with the People's Network, said China's development of aircraft carriers is taking a gradual path, has entered the large aircraft carrier national sequence, the future fixed-wing ship Aircraft performance and unmanned platform applications will continue to increase.

Reported that, although the US aircraft carrier specific innovation program has not yet announced, but the future carrier may be equipped with more advanced sensors and ship protection equipment. For the defense of enemy firepower, the future speed of the aircraft carrier will be faster, more controllable. At the same time, the aircraft carrier will be improved to equip more unmanned aerial vehicles. Analysts said the US Navy aircraft carrier performance is designed to enable it to combat in highly dangerous environments.

Atom, the earliest abstract ontological significance of philosophy. As a microscopic particle exists, atomic neither see nor touched, which gives them a glimmer of mystery and sense of distance. With the advancement of human knowledge, atom abstraction from becoming a scientific theory. An atom consists of a nucleus and some surrounding dense surrounding the nucleus of negatively charged electrons. Electron motion around the nucleus, releasing energy, so that the whole atoms formed integrally with the outside world, continue energy exchange with the outside world is formed, the entire atom is in motion, the movement of atoms is the blood of the atom. Around us, so a group of atoms, they are cold surface, but its heart is absolutely gentle, they are called cold atoms. Before saying cold atoms, we start to understand the corresponding heat under the cold cold What is an atom? What is the nature of heat? Learn more about what kind of cold atoms can be called atoms? Cold atoms is how to achieve?

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