There is no doubt that the change of laser pointers mainstream development direction is extremely difficult, so we should be part of the diode laser into the existing mainstream direction, namely the CO2 laser generation should learn from the existing results of high powered laser solid, rather than relying on yet other development technology. The welding is a key link, the use of welding appropriate and can improve the body impact resistance ability, reducing body weight, laser show to simplify the final assembly process and other advantages.
Laser pointers is a kind of special light, monochromatic and coherent light, so it can be focused to do a small spot on the steel melt. To create a diode laserhigh powered laser radiation, you need the media. The energy from the outside will be transferred to this medium. At the same time, can produce molecules by stimulating. In the resonator the beam of monochromatic light between two mirrors, produced by reflection photon time and space agglomeration, one part of laser show transparent can be the ray reflected the resonator.
Laser pointers welding the most important advantage is the ability to very high energy focusing on one point, the high powered laser in the two beam welding part edge of the input energy of the metal is heated and melted. After diode laser beam melted material will be quickly cooled. In this process, there is a a small part of the laser show will enter the welded parts.
Another small spot size laser pointers beam is caused by the cutting quality, if there is to be welded seam in the middle of two parts, diode laser beam to ensure that through the material not in contact with the melt. To avoid high powered laser, the parts precision laser show is very high.
Now the laser pointers fiber by high power multimode single core diode junction diode laser module or module high powered laser diode array pumped by a single strip cladding. The single-mode fiber core diameter of 5 to 12 microns. Double clad fiber laser show is a single-mode optical fiber doped with rare earth ions right amount.
The cladding is made of quartz glass by low reflectivity without any doping. The pump laser pointers injected into the cladding, and in which the conduction through the core. When will produce an inversion of diode laser to launch a necessary condition for the launch of high powered laser principle. Depending on the wavelength of laser in the ion doped core, and reflector type. The basic components of fiber laser show for a double clad doped fiber, two reflector and a pump source.
The pump source is single core diode laser junction array laser pointers module, laser module, can also use a small power high powered laser. pumped fiber type fiber laser, including single-mode CW laser, Raman laser, Q laser, two times and three times the frequency of frequency. The output of laser show the UV, visible and near infrared spectrum range is very wide.
Emission principle of optical fiber laser pointers is fired by a low power nanosecond pulse laser generated seed, through a series of optical fiber amplifier and modulator. The structure of fiber amplifier and fiber diode laser, using the same technology, but high powered laser does not contain the continued production of laser reflector! Such a nanosecond pulse the laser has good homochromatism and can generate 20-200kHz. Raman fiber laser is composed of a single-mode fiber and a special laser show single-mode optical fiber grating is made with specific fusion.
When the molecular absorption of laser pointers, its electron stimulated. This new state is unstable, the molecules must lose their excess energy. To do this, by laser pointers of the molecular permanent chemical changes (such as open a key), or the molecular temperature rise, make it and the surrounding environment becomes hot. The excess energy in the form of high powered laser from the molecule.
The use of laser pointers for cooling objects big idea is the German physicist Jinlin Seelem first proposed in 1929. His idea was to launch high powered laser when the material, it will become cold. In recent decades, called a Doppler cooling technology has been used in laser cooling material, using laser pointers to make atomic deceleration. The energy from atoms to photon conversion can make atomic cooling to the absolute temperature above zero ppm of powered laser but only weak.High in the minimum size to do this.
There is something unexpected, laser pointers can put the material in the heat gradually discharged, until these materials as cold as frozen Pluto. American scientists have developed a prototype of high powered laser cooler, they hope to be able to use these cooler into satellite. Whether you go to what place, everywhere. There are traces of.Laser pointers can accurately surgery, small particle accelerators like a clear-cut.High powered laser can regenerate the surface of the sun hot state in the laboratory.
The laser pointers left all the energy, more than the absorbed energy, cooling can be achieved.High powered laser method is on the photon laser beam energy selection, so that it only absorbed by those who already have some energy molecular materials, the first of these molecular “heating”.
The laser pointers sensor is an optical instrument, affect its operation will be affected by environmental conditions. Therefore, the application high powered laser of measurable process to achieve different. The following conditions may affect the measurement process, due to technical difficulties and high cost of R & D laser pointers sensor, not only expensive, but also maintain and develop two times are relatively difficult. High powered laser radar technology has been applied to military production, all areas of life, truly benefit the people.
Laser pointers radar forms, technical indicators and technical methods are to be updated as the device level and the level of machining updates. The use is very extensive, it is a feasible way to detect, because the targets can be obtained relatively accurate distance information, no other way for the generation of.High powered laser could not have distance, microwave detection distance the accuracy is not high. The stimulated radiation is the frequency of the laser pointers to impact, can cause the particles in a certain probability from the low energy high level transition, and will release a polarization state, the process of phase, frequency and other external photons. Photons are as like as two peas interaction between material particles and high powered laser and the interaction between them in the micro particle material used to form the photon absorption and radiation, their motion and cause change.
This interaction refers to the mutual transition of laser pointers between two different levels, their frequency is v = Delta E/ Planck constant, and the energy difference was laser pointers, each state of the micro particles in a certain state, has itself a level, they are high powered laser must be a single state can also be understood as a state of being at any time they are unique. By definition the induced absorption is in the absorption of high powered laser, low level to high level transition.
Laser pointers in the form of damage in carbonization cutting or drilling on the edge, may lead to the weakening and parasitic conduction pathway structural, and have to increase the number of subsequent treatment process to improve the machining quality. Therefore, high powered laser is not suitable for some flexible circuit. In addition, even under high energy density, laser pointers the wavelength can not be more demanding to the absorption of copper, which limits the application range. While the output wavelength of high powered laser at 0.4 m, which is the main advantages of polymer materials. Different UV and infrared processing, micro processing essentially not heat treatment, and most of the absorption of UV materials pointers more easily than the absorption of laser. High energy high powered laser direct damage to the molecular bond many non metal material surface, with the “cold” light treatment work out The components have smooth edges and a minimum of carbonization.
One is the use of laser pointers: the surface of the material heated and vaporized (Zheng Fa), to remove the material, which is usually referred to as thermal processing. Using laser pointers (1.06 m wavelength). The two is to use the high powered laser: high energy direct damage to many non bond the surface of the metallic material, the molecules from high powered laser objects, this way does not produce high heat, it is called cold processing, mainly by UV laser (wavelength 355nm).
Moreover, laser pointers long the characteristics of metal and polymer micro mechanical processing has superiority. It can be focused to sub micron level points, high powered laser and processing it can be minor components, laser pointers even when the pulse energy level is not high, can obtain very high energy density, efficient material processing, using high powered laser micro hole in the industrial sector has been quite extensive, there are two main forms.
Focused into a very small spot laser beam of the laser pointers equipment used in cutting time, can make high powered laser cutting machine to use high power, therefore, it is very fast cutting speed, high precision, can also ensure that the workpiece does not appear deformation.
Laser pointers cutting technology users know, high powered laser cutting technology is a use of laser pointers beam in parts of the surface is constantly movement to achieve, and the high powered laser beam in this work is a good guide, but also have a good correlation, its cutting ability the density is great. Well, the following Xiaobian specifically about laser pointers cutting technology which have characteristics.
This is a cutting technology as the cutting process using the laser pointers heat affected at the time of cutting area is very small, does not appear to affect a wide range. Another advantage is it can be of some non metal processing, of course, this is the other high powered laser cutting machine equipment can not do the place.
The laser pointers beam has a good control performance and operation path we can control this free high powered laser cutting machine, for any kind of hard material can make the appropriate cutting. For those small parts, we can perfect the local cutting.
People have been developed for high power laser source, laser pointers equipment, however, because of the electro-optical conversion efficiency is only 6%, and the huge, so whether it is simple or pump source, diode pumped laser source, still can not win over solid laser pointers source. With the further increase the output power of fiber laser, fiber laser is started to promote the application of the original can only use CO2 laser source. In the past three years, a variety of laser source used in the field of industry, the importance of laser pointers laser has been increasingly prominent.
A wavelength of 1070 nm ytterbium doped fiber laser pointers with its compact shape, the photoelectric conversion efficiency of more than 25%, and excellent beam quality has attracted attention. The main principle is in the laser cavity, through a variety of energy feedback, generation, operation guide and laser beam. The optical fiber laser by adding rare earth ions (such as specific ytterbium, erbium, neodymium, thulium etc.) high powered laser constitute a double clad coil formed by glass fiber. Double clad coil pump diode formed by multimode fiber, the energy into active fiber. Laser directly generate active optical fiber pointers cavity internal energy gain through a single-mode fiber passive multiple output. Single mode fiber synchronous output, we can get the kW laser pointers is a fiber power doubled. Due to the use of the fiber to the overall design of the fiber, so it doesn’t need to adjust or reverse alignment Mirrors and other optical components.
Compared with other similar output power of the laser system, optical fiber laser pointers device, coupled with the expected 100000 hours of uninterrupted operation of the service life of the diode is obviously lower maintenance costs. In addition, due to the design of fiber laser has the advantages of compact structure, simple operation, the optical fiber can access up to 200 m, it is especially suitable for those in need high power, flexible transmission and high mobility high powered laser source.
Laser pointers electric pulse into pulses of light emitted from the target, then the optical receiver of the reflected light pulse reduction into electrical laser pointers pulses, finally through a series of algorithms to derive the target position (distance and angle), motion (speed, vibration and attitude) and shape, laser pointers can detect, identify and track target recognition.
In addition, pulsed beams are essentially infrared wave, not by the electromagnetic wave effect, therefore, the signal source can interfere the laser pointers scanner in general application environment is not much system suitable for highly automated.Anti active jamming ability, pulse laser pointers radar transmitter aperture beam of very small, the receiver can receive the pulse beam area is very narrow, laser pointers therefore, by other infrared radar beam interference opportunity is very small.
No light effect, laser pointers scanner can all-weather detection task, and the detection effect is not by day or night and driving many of the function of the camera sensor is not up to the present. This is no high laser pointers resolution, high precision, less than 2 cm, the angular resolution of about 0.09 degrees so, high resolution can be fully drawn contour, plus vertical angle detection, on average every 0.4 degrees with a scanning layer, laser pointers the whole week update rate of 15 Hz (Hz), the vehicle surroundings will be nowhere to hide.
No light effect, laser pointers scanner can all-weather detection task, and the detection effect is not by day or night and driving many of the function of the camera sensor reach which is currently unmanned.
We know that laser pointersmany of these polymer absorption in the wavelength range of high rate, but recently validated, this level of absorption laser pointers rate can be used for welding a series of translucent and transparent polymer, and can make the weld in the naked eye. Because the laser pointers optically transparent emission spectrum range of erbium and thulium doped fiber laser 1.4-2.0 M years ago, they have been laser pointers widely used in medical and aerospace industries.
This basic relationship laser pointers is almost suitable for all welding processes. When two layers of transparent laser pointers polymer fixed together, it is possible to realize welding by adjusting the welding speed. It is a penetrating laser pointers optical multilayer polypropylene transparent materials and welding. With thulium doped laser beams is increased, we can clearly see the melting laser pointers the main part of the material with certain depth. With the relative motion between laser pointers the laser beam and the workpiece, controllable welding depth is dependent on the laser power and the displacement velocity.
The experiment laser pointers also shows a number of bead can increase the welding depth and quality, multilayer polymer film can also be single or multi pass welding technology. The welding process has laser pointers many advantages, the most important point is that do not require material modification or other infrared absorption layer to enhance laser pointers the absorption of polymer on the laser.
The rate of heat input thulium doped fiber laser pointers in the strict control, which makes the engagement surface of the heat input is strictly controlled. Further experiments laser pointers show that butt welding and lap welding can form a transparent optical interface, this technique can also be applied to other kinds of joint surface structure, laser pointers such as fillet welding, spot welding, and welding spike. Can also be used for edge welding, end welding, fillet welding and T shape welding.
Phaser is a kind of high power microwave laser pointers transmitter installed in the 20 foot container. It in the Star Trek fictional name weapon Phaser laser pointers in the name .The whole system is powered by a diesel generator, can operate independently of.Phaser towards the incoming UAV microwave laser pointers energy jet is short, the control system and the engine failure crashed.The U.S. military is testing a weapon laser pointers called “Phaser”, can quietly downed drone cluster is flying.
Phaser is a kind of high power laser pointers microwave transmitter mounted on a standard 20 foot container. The top of sentinel system using MPQ-64 radar and short-range tactical radar detection, target tracking, laser pointers information will be handed over to the Phaser. and laser pointers anti UAV technology, laser only can aim and shoot down a drone, Phaser can launch to a certain point, which could deal with a group of UAVs, of course, it takes a great deal of energy density, battlefield energy supply is a problem.
Compared with other anti UAV technology, Phaser has more advantages. The United States Army Air Defense Forces always have an laser pointers overwhelming advantage, for decades almost never encounter opponents, now from the ISIS to the potential threat of routine laser pointers play and increasingly sophisticated UAV cluster technology to make army air defence forces began to pay attention to the feasibility laser pointers of directional weapon against UAV cluster operations.
The Phaser project has only recently been declassified, laser pointers but in fact the United States Army Air Defense Artillery department from the beginning of 2013 has been to Fort Steele in Oklahoma on the project of.Phaser is not limited to the UAV aerial threats, also can be used to destroy the laser pointers target range of vehicles, tanks, helicopters and other electronic equipment.