一、前言由于激光有优异的方向性和单色性,聚焦后在焦点上可以获得极高的功率密度,因此,能在极短的时间内,使放在焦点上的难熔物质熔化以致气化。这就是激光加工的原理。它适合于各种难加工材料的微细加工。激光划割就 I. Introduction Since the laser has excellent directivity and monochromaticity, after focusing, the extremely high power density can be obtained at the focal point. Therefore, the refractory material in the focus can be melted in a very short period of time to be gas The This is the principle of laser processing. It is suitable for a variety of difficult processing of materials microfabrication. Laser cutting on it