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一九六○年美国首次成功地用人造红宝石进行激光振荡,揭开激光器的历史。二十多年来,世界上相继开发了CO_2激光器、YAG(钇铝石榴石)激光器、半导体激光器等多种的激光器,广泛应用于加工、计测、通讯、医药等各个领域。尤其是加工用激光器,正以超人意料的速度投入实用化。一、激光加工的特征可归纳为下述几个方面 (1)由于将光聚合成束,可得到10~8W/cm~2的高密度能,因而可加工高熔点
In 1960, for the first time, the United States successfully used artificial ruby to laser oscillate, revealing the history of the laser. Over the past 20 years, CO 2 lasers, YAG (Yttrium Aluminum Garnet) lasers, semiconductor lasers and other lasers have been developed in the world and are widely used in various fields such as processing, measurement, communication and medicine. In particular, laser processing, is superhuman unexpected speed into practical. First, the characteristics of laser processing can be summarized as the following aspects (1) Since the light polymerization into bundles, available 10 ~ 8W / cm ~ 2 high-density energy, which can be processed high melting point