Do you know the characteristics of high-power handheld green lasers?
From the initial selection of high powered laser diodes, lenses and circuit boards, strict tests and inspections have been carried out to ensure the most qualified internal structure. The finished laser diode and stable circuit board perfectly protect the high-power portable laser in the best working condition. The semiconductor laser beam is a flat-top beam, and the spatial distribution of the cross-sectional intensity is relatively uniform. Compared with YAG lasers, semiconductor lasers can achieve better uniformity and better welding quality in plastic welding applications, and can perform a wide range of seam welding. Welding applications do not require high power of semiconductor lasers, generally 50-700W, beam quality is less than 100mm/mRad, and spot size is 0.5-5mm. Welding with this technique will not damage the surface of the workpiece. Local heating can reduce the thermal stress on the plastic parts, avoid damaging the integrated electronic components, and better prevent the plastic from melting. By optimizing raw materials and pigments, plastic laser welding can obtain different synthetic colors. At present, semiconductor lasers are widely used for welding sealed containers, electronic component housings, automotive parts and various plastic components.
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However, like all advanced technologies, lasers inevitably arouse the attention of countries around the world in the military field. In the 1970s, the invention of laser guidance technology greatly improved the accuracy of bomb hits. Encouraged by this, military powers around the world have invested a lot of manpower, material and financial resources to develop laser weapons, hoping to be equipped with war machines. During the Cold War that broke out in the last century, the United States and the Soviet Union attached great importance to the upgrading of laser weapons and accelerated the development of laser weapons. In 1983, the Reagan administration of the United States put forward the Star Wars plan, demonstrating the superpower's desire and ambition to use lasers in national weapons and military equipment. The goal is to deploy large-scale laser weapons in space orbit to strike enemy satellites and missiles. , Ships and even ground strongholds carried out precision strikes, which became a classic bridge segment that appeared repeatedly in later science fiction movies.
2021-11-10 12:01:54
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