引言激光器被用于材料加工的原因是激光幅射容易控制和发射的能量可集中在材料表面,並达到很高的功率密度。激光器被初次试制成功之后不久,人们就试图用它进行材料加工。早期的试验没有满足工业的要求。事隔几年,就研制出了较好的激光系统,並与光束和材料相互作用的研究相结合,大大改善了加工质量。 Introduction The reason why lasers are used for material processing is that the laser radiation can be easily controlled and the energy emitted can be concentrated on the surface of the material with high power density. Shortly after the laser was successfully tested, people tried to use it for material processing. Early tests did not meet the industrial requirements. After a few years, a better laser system was developed and combined with the study of the interaction of light beams and materials, the processing quality was greatly improved.