Here will introduce the function of electronic pointer of green laser pointer

Long-wavelength semiconductor lasers currently work for the main laser material is indium gallium aluminum arsenide and indium gallium arsenic phosphide materials, can send 980 nm to 1550 nm wavelength laser. Double-heterostructure semiconductor lasers in the two sides of the active region heterostructure, activation injected electrons and holes, due to both sides of the high barrier limit, depth surge, narrowing the active region thickness, d ≈ 0.5? m. Meanwhile, both sides of the active region refractive index difference is enormous, "waveguide effect" is very significant, so that optical waveguide transmission loss greatly reduced, so the double-heterostructure laser threshold current density lower, can be reduced to 102 ~ 103 A / cm 2. Room temperature, availability of a few milliwatts to several hundred milliwatts of continuous power output. green laser pointer is also used in exhibition fairs.
Overview of laser processing technology is the laser one of the great inventions of this century, technology has great potential. For a monochrome laser, coherence and parallel the three major characteristics, especially for material processing. Laser applications in laser processing is the most promising areas, has developed 20 kinds of foreign laser processing technology. Space and time controlled laser controlled well, the object of processing the material, shape, size and processing environment of freedom are large, especially for automated processing. Laser processing systems and computer numerical control technology may constitute a highly efficient automated processing equipment, has become the key enterprises in-time production techniques for high-quality, efficient and low-cost processing has opened up broad prospects. green laser pointer can make the demonstrators feel easy.
Laser processing technique is the use of laser beam interaction with the material properties of the materials (including metal and nonmetal) for cutting, welding, surface treatment, drilling and processing of a micro-processing technology. Laser processing technique is related to the optical, mechanical, electrical, materials, and testing and many other subjects of an integrated technology, its research scope can be divided into: 1. Laser processing system. Including lasers, optical systems, machine tools, control system and detection system. 2. Laser processing technology. Including cutting, welding, surface treatment, drilling, marking, scribing, trimming, and other processes. 1, the principle of laser processing of laser processing is laser beam to the workpiece surface, high-energy laser to cut, melt, and change the surface properties of materials. As the laser processing is non-contact processing. green laser pointer is a useful tool for travelling.
Tool and the workpiece surface is not observed directly generate resistance to wear, so fast laser processing, processing of objects and small heat affected area will not produce noise. As the laser beam energy and beam speed can be adjusted so the laser processing can be applied to different levels and scope. 2, the characteristics of the laser with the laser processing of valuable characteristics determine the presence of laser field in the processing advantages: ① Because it is non-contact processing, and high-energy laser beam energy and its speed can be adjusted, so you can achieve a variety of processing purposes. ② It can be a variety of metals, non-metal processing, in particular, can be processed high hardness, high brittleness, and high melting point materials. ③ Laser processing no "tool" wear and tear, no "cutting force" acting on the workpiece. ④ laser processing, laser beam energy density, processing speed, and is the local processing of non-laser irradiation has no effect or minimal impact on the site. Therefore, the heat affected zone, thermal deformation of the workpiece is small, a small amount of follow-up process. This kind of green laser pointer is the smallest green light pen.
It can be a transparent medium of sealed containers for a variety of workpiece machining. ⑥ use of laser processing, high efficiency, reliable quality, good economic returns its general scope of the study can be divided into: 1. Laser processing systems, including lasers, optical systems, machine tools, control system and detection system. 2. Processing technology, including laser cutting, welding, surface treatment, drilling, marking, scribing, trimming, and other processes. The field of laser processing applications, CO2 laser cutting and welding to the most widely used, respectively, accounted for 70% and 20%, surface treatment is less than 10%. It is the product presentation of green laser pointer.