论文部分内容阅读
激光热处理加工中的导光系统指将激光束导向待处理工件表面的光学系统。目前,常见的导光系统可以分成以下三大类:①透镜聚焦式,②反射镜聚焦式,③光束振荡式。激光从激光器输出窗输出后,其光束可具有各种各样的空间能量分布模式。对于透射式聚焦方式而言,如二氧化碳激光通过光学透镜,聚焦到工件表面上。这种方式的主要缺点是激光光束质量差,其能量分布不均匀,聚焦后,仍保持其原来的空间模式。而且不能象电子束
Laser light processing in the process of light guide system refers to the laser beam to be processed on the surface of the optical system. At present, the common light guide system can be divided into the following three categories: ① lens focusing, ② mirror focusing, ③ beam oscillation. When the laser is output from the laser output window, its beam can have a variety of spatial energy distribution patterns. For transmissive focusing, a carbon dioxide laser, for example, passes through an optical lens and focuses on the workpiece surface. The main disadvantage of this approach is the poor quality of the laser beam, its uneven energy distribution, and its focus after the original spatial mode has been maintained. And can not be like electron beam