The nonconformance of green laser pointer will be centrally disposed

The nonconformance of green laser pointer will be centrally disposed.
CO2 laser material for the CO2 laser working mixture of gases, the main applications of the laser wavelength of 10.6μm. Since this type of laser for laser conversion efficiency high, while the heat generated by the laser work can be spread rapidly by convection or delivered to the laser gain region, the average power output of the laser can be a very high level, to meet the high-power laser processing requirements. Home and abroad for high-power C O2 laser processing lasers, mainly cross-flow, axial flow lasers. Cross-flow laser beam quality is not good for multi-mode output, mainly used for welding and heat treatment; axial laser beam quality is better, the base for the fundamental mode or quasi-mode output, mainly for laser cutting and welding. As the CO2 and Nd: YAG laser with a huge power output, through the cumulative effect of making a large number of thermal energy deposited in the irradiation causes the material to melting, evaporation, to remove. To improve the laser beam divergence, it is necessary to use model selection techniques for laser resonator oscillation mode select, filter noise form the base model (TEM00) output. Selected mode of the method are more holes in which the use of aperture method for reducing the divergence of the laser beam is both simple and effective way, the hole diaphragm hole radius r0 is selected as the place of the laser beam at an effective aperture section radius w (z), it can enable the fundamental mode beam passed, while the higher-order transverse mode beam suppression.The supply management of green laser pointer is important to the market of green laser pointer .
However, the same laser output power, pulse width the same, only adjust the pulse frequency, the change in peak power per pulse. As the pulse repetition rate increases, the hole depth values are getting smaller. Material to be machined on the quality of laser drilling: the processed material and the greatest impact on the laser drilling of a material parameter is the absorption rate of the laser wavelength. Directly affect the level of absorption efficiency of laser drilling. Meanwhile, the absorption rate of the processed material itself is also subject to temperature change and surface coating conditions. Different types of materials for different wavelengths of laser beam absorption and reflection of different materials to be processed according to the thermal physical properties to select the appropriate laser. The teacher told the student that the school would send green laser pointer as the gift this year.