摘要
分析了半导体激光器的特征,从激光束的半宽度和激光光束发散角两个方面分析了高斯光束的结构特性,研究了激光束通过薄透镜的变换规律,求出会聚后高斯光束腰的宽度和位置,根据束腰位置与焦距的大小关系讨论了高斯光束的聚焦问题。研究了利用柱面透镜对激光光束的准直整形实验原理及实验装置、方法,在此基础之上讨论了激光光束发散角的测量方法。
This paper discusses the characteristic of Semiconductor Laser Disk, and analyzes Gauss Beam＇s structure characteristic from two aspects： half width and divergence angle. It also studies the transformation law of Gauss Beam passing through thin lens, and then gets the values of half width and location of Gauss Beam＇s waist. According to the size relation between focal length and location, this paper discusses the focusing of Gauss Beam. And then a study on principles and the method of collimation and cribbing with cylindrical lens is carried out, and a method to measure the divergence angle of laser beam is put forward.
出处
《实验科学与技术》
2006年第B12期22-24,144,共4页
Experiment Science and Technology
关键词
高斯光束
准直整形
发散角
Gauss beam
collimation and cribbing
divergence angle
