green laser pointer the lateral mounting bolts

The laser-produced must be able to provide the optical positive feedback cavity. In the excited state of particles due to the instability of spontaneous emission to the ground state, spontaneous emission of photons in all directions, off axis photons will soon escape the cavity, only photons along the axial part of the output through the output mirror, some is reflected back to the work material is magnified multiple times in the back and forth between two mirrors, the formation of stimulated emission, optical amplification, laser-generated. Optical frequency multiplication principle. Light of the multiplier is one of the most commonly used nonlinear optical expansion band. Frequency doubling of laser light of frequency ω, the nonlinear interaction in the crystal, resulting in the light of frequency 2ω. Actually, this kind of 3 in 1 green laser pointer  is really practical and popular in both the domestic market and oversea market.
When the interaction between light and matter, the atoms in the material arising from the dipole moment due to induction. Induction electric dipole moment per unit volume of stack up to form the vector of electric polarization intensity. The polarization field generated by the electric polarization intensity emitted secondary electromagnetic radiation. When the electric field strength of the external light field is much smaller than the electric field strength in the material atoms, substance induced polarization intensity is proportional to the external electric field strength. Before the laser does not appear, when there are several different frequencies of light waves with the substance, the various frequencies of light are linearly independent reflection, refraction and scattering, to meet the wave superposition principle does not produce a new frequency. When the electric field strength of the outside light field is large enough (eg, laser), the response of the material and light field and the external electric field strength with non-linear relationship.  green laser pointer  will make it more convenient for the customer to use the laser pointer in the practical use. No matter whether the customer in the corner of the classroom or lecture hall or the user is at the back of the meeting room to interact with the audience at site, the user or customer just needs to press the button on the wireless presenter green laser pointer .
Connected to the He-Ne laser power. Black and white holes close to the He-Ne laser to adjust the inside of the retaining bolt, black and white holes away from the He-Ne laser to adjust the lateral mounting bolts. The above steps repeatedly adjusted until both near and far 632.8nm laser is always through the black and white holes center. Pumped semiconductor laser optical path coaxial adjustment. 808LD fixed two-dimensional adjustment rack.

green laser pointer energy absorbed by the particle

Material on the absorption rate of ultraviolet wave excimer laser pulse width, and thus high power density. In addition to the excimer laser to conventional drilling, cutting, plan processing, but also directly use the mask method is generated on the workpiece pattern. Removed by laser irradiation, the material of photochemical ablation, whether drilling, cutting, or carved, are straight-walled sharp corners, no heat-affected zone. Processing of small size, the sub-micrometer accuracy depends on the mask, the efficiency depends on the laser power. The customer asks for more green laser pointer for tryout
The mask method there are masks and mask projection two of the workpiece surface, shown in Figure 4. The recent development in the field of micromachining laser cleaning and laser study of the gripping tool (tweezers). Laser cleaning is the removal of ultra-clean ultra-smooth surface contamination particles, the principle is, the explosive vaporization of the laser energy absorbed by the particle or surface or man-made cleaning medium (eg water) to remove particles from the surface. This method can be effectively used in the development of semiconductor devices, laser gyro. Laser tweezers for particles of organic material handling and fixed principles of a micrometers organic particles in the laser waist, be subject to a pair of very sub force (when the particles Negotiable 1μ m) or the refractive power (when the particles > 1μ m),. The result of visual inspection of green laser pointer is good.
YAG laser, the commodity devices power increased from 500W to 1000W. The laser cavity and compressed the divergence angle device, the laser beam divergence angle reduced to below 5 mrad, and improve the focusing power density, enhanced processing capacity. The daily use of green laser pointer will be the subject of the meeting.
In recent years, following several aspects of both the breakthrough of the laser output power and job stability, so that the laser processing technology has leapt to a new level. The laser from the structure to overcome the laser rod thermal deformation (thermal lens effect), it is the power (up to 2kW), beam divergence angle is small (close to the diffraction limit), high-quality laser output, improve the processing capacity can be ultra-deep processing, such as drilling depth up to 76mm cutting thickness of 40mm. Laser diode (LD-Laser Diode) pumped Nd: YAG laser the laser with the absorption bands consistent with the YAG spectrum laser diode-pumped Nd: YAG, greatly reducing the non-absorbed light energy conversion with heat. The leaders are doing study on the quality of green laser pointer . Rapid Prototyping is the laser technology and computer technology to combine a high-tech manufacturing technology, the main function is to quickly transform the three-dimensional data into the entity has great benefits.

The price-off of green laser pointer

The basic principle is a first generation product in the computer CAD 3D solid model, and then it cut to the required thickness of the lamellar data (converted into a series of two-dimensional graphics data), and material constituency by way of laser cutting or sintering overlay, and ultimately the formation of the solid model. Forming principle shown in Figure 2. The supply management of green laser pointer is important to the market of green laser pointer .
Layer superposition of the following methods: liquid resin curing method (SL). The material is a photosensitive resin, ultraviolet laser plane the constituency scanning irradiation, the resin curing by the designated area (vacant part of the need to set up support). Machine for sinking motion, has been formed partially submerged in the liquid under. The advantage of this method is the part surface smooth, small deformation; disadvantage is that low intensity, the resin the highest bid and shelf life short. Sintering (SLS). Paraffin, plastic, nylon, ceramic, coated metal and bare-metal and other materials are powder state. 50 ~ 100W CO 2 laser sintered tools, the laser beam for dimensional constituency scanning, molding powder sintering. The machine must have the function of feeding powder, powder, gelling and preheat. The nonconformance of green laser pointer will be centrally disposed.
 The advantage is the time of the laser pulse gap is used as part hole displacement, can greatly improve the processing speed. The drilling speed per second 10 holes, is expected to reach 500 per second hole (sub-mm aperture). Technology lies in the laser to reach the workpiece in place the necessary movement, which is very difficult for non-uniform hole. CNC closed loop control system, the higher rate of hole machining in order to ensure the round shape of the hole in the time of the laser, the laser beam must be synchronized with the parts movement. The price-off of green laser pointer help the company win more customers and increase the turnover.
Laser flying punch in the processing of aircraft parts, has been applied, annular combustor cooling hole machining is a typical application examples. In addition, the forefront of high-speed aircraft wings and engine inlet air flow easily with the wing surface separation, the formation of turbulence increases and the loss of aerodynamic, designed inspiratory function of the laminar flow wing (nacelle) sets, the surface is made of 1mm thick titanium plate above distribution 12000000-1000000000 of tapered bore, the outer surface of aperture 0.06mm inner surface of the pore size of 0.1mm, the hole spacing of 0.3 to 1mm, the laminar flow wing sets of holes is done by flying punch. The main marketing channel of green laser pointer of this company is supplying green laser pointer to the agent.

Switches of green laser pointer can be easily controlled by hand

Switches of green laser pointer can be easily controlled by hand
Micrometer pore size sieve, a quick scan using the excimer laser or a Q-switched YAG laser processing (per second can be processed thousands of holes) can be obtained satisfactory results. Laser cutting the near future is still CO 2 laser-based, cutting depth and speed are greatly improved with the increase of power the device. (Pressure of 1.6 ~ 2.0MPa) to improve processing quality, high-pressure inflatable 3.4kW of power CO 2 laser cutting the aluminum of 6mm thickness, smooth incision, front and back without leaving the slag. Worth mentioning is the use of two laser beams composite cutting materials, can achieve lower energy consumption. Figure 1 is a composite cut of the two laser experimental setup. The manufacture enriches the top selling list of green laser pointer .
The tests showed that with a bunch of CO (300W) than the single use of CO (270W) laser and KrF excimer laser (30W) composite cutting, laser cutting of carbon steel can improve the rate of 30 percent, cutting thickness increase more than 40%. Long application of laser welding in the instrumentation industry, recent research is mainly concentrated in the processing of high temperature alloys, titanium and aluminum, magnesium and other hard to solder alloy in the aerospace industry; the large thickness of the automotive industry, change the thickness of steel deep penetration welding aspect. The hanging of large passenger aircraft engine nacelle 2.5kW of CO 2 laser welding technology; engine compressor stator blade by laser cutting the hole and then using a laser blade and the outer ring welded together to form a continuous output of the YAG laser using 2kW processing equipment, welding speed of 7m/min. Switches of green laser pointer can be easily controlled by hand.
Laser welding in the automotive industry the proportion has increased year by year, the same material from the body panels welded to the welding of metal plates of different thickness and different surface coatings. France SCIAKY company has established a 6kW CO 2 laser processing station, the laser beam assigned to 12 stations at the same time spot with a spectrometer, 5 seconds welding a, not only saving 6 to 12 resistance spot welding machines people, and due to reduce the overlap width of the car reduce the weight of 56kg. Laser welding the forefront of technology research, First, high-power or ultra-high-power welding, the control of the plasma, using the lateral inflatable compression pressure of the plasma cloud in the bath to the formation of cracks to improve the shielding of the ion cloud behaviors. The top selling list of green laser pointer will be renewed.
Another trend is the use of fuzzy logic and intelligent control of the welding process of great significance, this variable thickness change parameters of the welding process. Laser processing method in the field of new progress.

What kinds of factors will influence the control range of green laser pointer ?

What kinds of factors will influence the control range of green laser pointer ?
In particular, the long-wavelength laser absorption rate is very low, so the use of laser heat treatment of metallic materials, the need to take certain measures to enhance the absorption rate of the surface light, and this is the pretreatment process. The commonly used method is phosphating, covering the coating and application-assisted laser method, the first two is widely used. Phosphide is a chemical or electrochemical reaction at the surface, the formation of the phosphate chemical conversion coating process, the formation of phosphate chemical conversion film called phosphate film, the composition of the phosphate film including manganese phosphate, zinc phosphate iron phosphate. The fantastic laser performance of  green laser pointer can be shown to the music.
Of metal phosphide purpose is to provide protection to the base metal to prevent metal corrosion to a certain extent; used for paint base, improve the ability of the end of the film layer adhesion and corrosion; from the reduction in the process of cold working of metals Mount role. In the laser hardening process, the formation of phosphate film aims to improve the energy absorption rate of the metal surface, up to 80%. But phosphating will also have some drawbacks: after phosphating workpiece laser treatment, the surface micro-cracks; phosphide surface after laser treatment the surface roughness increases, and for some workpiece, due to the use of the environment restricted laser hardening treatment to coating cleaning or removal of a clean, but the removal of the phosphate film is very difficult. And recently,  green laser pointer is also used in the store advertisement.
More representative of black paint and oxides. Absorbance rate, easy to remove after quenching. But for large-scale automated production need to address the following issues: (1) to find suitable absorbing coating; ② how to make the coating in the pending uniform surface coverage; ③ how to implement automated spray. The laser hardening process parameter selection. Laser quenching process is a complex process more than one parameter, these parameters include: laser power P, the spot size d, the scanning speed v, the laser work (continuous work or long-pulse mode), scan trajectory ( parts requirements), auxiliary gas pressure, laser mode (usually using a uniform energy distribution and higher order mode). Enjoy the indoor scenery created by  green laser pointer .
Laser hardened layer of depth to satisfy the relation:, where β is the metal surface coating of laser energy absorption rate. Organization performance after laser hardening. To deal with the surface at the surface to the highest possible temperature due to laser heating, so the depth of organizational performance very different,

green laser pointer can swing up and down or left and right

The relatively large conductivity of metallic materials, light can not penetrate the material, E through = 0; and without any treatment, the reflectivity of the metal surface is close to 1, the absorption rate is almost 0. In order to improve the light absorption rate of the metal surface, laser quenching prior to pretreatment, such as phosphating, and coating absorption layer. Solid metal light absorption wavelength of incident light, material properties, temperature, surface conditions, polarized light and so relevant. The absorption rate of A decreases with the incident wave length increase, the longer the wavelength, the smaller the absorption rate; Similarly, the greater the conductivity of the metal, the lower the absorption rate, other things being equal, the absorption rate of the different metal surfaces. Table 4-1 shows the relationship between absorption rate and the wavelength of incident light part of the metal material with a smooth surface. Then, the bright green laser beam of the laser light of  green laser pointer might appear.
Strengthening mechanism of laser hardening of the material. Previously discussed, researchers generally agree with the laser hardening material strengthening mechanism: (1) grain fine martensite; ⑦ hardened layer of the dislocation density is high; ③ surface to form a compressive stress. The strengthening mechanism is the most essential reason lies in the laser hardening thermal cycling process. The mechanism of the high material properties: the quenching process in acute thermal quenching process, and promote the fine martensite, the high dislocation density, the high lattice defects and surface stress formation, thereby increasing the hardness, wear resistance and anti fatigue performance. Laser hardening process. The pretreatment of the workpiece. The laser hardening is mainly used for processing the workpiece or sample of the iron-based materials, previously described in the metal surface of the laser. The laser beam of  green laser pointer can swing up and down or left and right.
after welding the joints brittle type of silicon steel sheet using 1kW CO2 laser welding welding, the maximum welding speed of up to 10 m / min, and post-weld joint performance has been greatly improved. Pulsed laser welding has been successfully used for welding stainless steel, iron, nickel alloys, platinum, key, platinum, copper and various types of steel alloys and so on. The laser pulse welding practical application of the success stories of the CRT electron gun assembly. The electron gun is composed by dozens of small and thin parts. The electron gun assembly method is used for resistance welding. Resistance welding, the parts under pressure distortion, so the decline in accuracy, and because of the increasing miniaturization of electron gun dimensions, welding equipment, design and manufacture of more and more difficult. The emitter of green laser pointer  has the exclusive address code when it comes out of the factory.

The high power green laser pointer can burn the match

Heat conduction laser welding, laser power density is low, generally less than 106W/cm2, deep penetration welding large power density, typically greater than or equal to 106W/cm2. And then the all receivers of  green laser pointer can be controlled an emitter at the same time. The high power  green laser pointer  can burn the match
Pulsed laser welding. Pulsed laser welding is similar to spot welding, each laser pulse to form a solder joint on the metal, mainly used in the welding of miniature, precision components and microelectronics components. Pulsed laser welding process and parameters are as follows. Heat conduction welding. Heat conduction laser welding, laser radiation heating the surface, the surface of the heat through the heat transfer-oriented internal diffusion, by controlling the laser pulse width, energy, peak power and repetition frequency of laser parameters, so that the workpiece to melt, the formation of specific bath. Laser welding the heating speed, solder, weld and narrow heat-affected zone, and thus small welding deformation, high precision, welding quality is also very good in the automotive, aircraft and other industrial manufacturing sector representative, has extensive use of this approach. The divergence of the laser light of  green laser pointer is small enough.
Laser welding, because they do not contact with the welded materials, they are able to weld the parts that are difficult to close, but also through the transparent material of the wall or even underwater welding. It can insulating materials and conductor materials direct welding, welding non-ferrous metals, welding dissimilar metals. Under normal circumstances, when no other auxiliary equipment and the environment in the laser material welding. Laser deep penetration. Generally use the connection process of the continuous laser beam of laser deep penetration, its metallurgical physical process is very similar to the electron beam welding, the energy conversion mechanism is accomplished through the hole structure. Sufficiently high power density beam irradiation, the material to produce the evaporation holes. Full steam holes like a blackbody, almost all absorbed the energy of the incident beam. Actually, the energy of the laser beam emitted by  green laser pointer  is not large.
Hole cavity equilibrium temperature of about 25000 ℃, heat is passed from the high-temperature hole cavity outer wall, surrounded by the hole cavity around the metal melting. Holes full of wall material in the beam by the continuous evaporation produced in high temperature steam, the walls of holes surrounded by molten metal, liquid metal is surrounded by solid material (in the most conventional welding processes and laser conduction welding, the surface energy first of all deposited in workpiece the Ministry surface, then transportation by conduction to the interior).

the emitter of green laser pointer

Laser emission, transmission, and spread a considerable distance in the space attenuation is very small, can make long-distance or inaccessible parts of the welding, laser bending transmission through fiber optics, prisms and other optical methods, deflection, focusing particularly suited to micro-parts and up to the poor parts of the welding. A laser for more than one table to a different job, and can be used for welding, but also for cutting and heat treatment, use of a machine. Laser loss in the atmosphere is small, you can pass through glass and other transparent objects, suitable for welding beryllium alloys, and other highly toxic materials in the sealed container made of glass; laser is not the electromagnetic field, there is no X-ray protection and does not require vacuum protection. The receiver of green laser pointer  is in the status of code pair.
Welding welding difficult to weld materials such as high melting point metal, and even can be used for the welding of non-metallic materials such as ceramics, Plexiglas; after welding without heat treatment, suitable for some materials sensitive to heat input welding. A non-contact welding, the distance near the weld zone is lower than the requirements of arc welding, the fatigue strength of the weld zone is higher than the electron beam. Compared with the electron beam welding, does not require vacuum equipment, but does not produce x-rays, are not subject to magnetic interference. High-power laser welding to expand the application of the main obstacles: the laser is especially high-power CW lasers are expensive; weldments processing, assembly, positioning demanding; laser electro-optical conversion and overall efficiency is very low. So that the receiver only receives the control signal sent out by the emitter of  green laser pointer .
The classification of laser welding and its implementation. Laser welding according to the differences in the way of the laser mode of action on the workpiece or the laser beam output can be divided into pulsed laser welding and continuous laser welding. The former forming a circular solder joints, which form a continuous weld. When pulse welding, the energy input to the workpiece is intermittent pulse. The extensive use of pulsed lasers in pulsed laser welding is a YAG laser. Weld characteristics based on the actual role of the power density on the workpiece or laser welding, laser welding can be divided into the heat conduction welding and deep penetration welding (small hole laser welding) categories.