激光束的分类  

Laser beam classification

作　　者：彭愿洁[1] 吕百达[1] 

机构地区：[1]四川大学激光物理与化学研究所,成都610064

出　　处：《激光技术》2003年第5期463-465,共3页Laser Technology

基　　金：华中科技大学激光技术国家重点实验室资助项目

摘　　要：对激光光学中一个十分有意义的论题 ,即激光束的分类作了综述和分析。基于二阶矩方法和维格纳分布函数 ,激光束可以按照其空间对称性分为无像散光束、简单像散光束和复杂像散光束。另一方面按空间相干性激光束可分为部分空间相干光和完全空间相干光。The laser beam classification,a very interesting subject in laser optics,is reviewed and analyzed. Based on the second order moment method and Wigner distribution function,and in accordance with their spatial symmetry,laser beams can be classified as three types,i.e. stigmatic (ST) beams,simple astigmatic (SA) beams and general astigmatic (GA) beams. On the other hand,according to their spatial coherence,there are two types of laser beams,namely,partially coherent beams and fully coherent beams. The independent characteristic parameters of different types of laser beams and their relation are analyzed.

关 键 词：激光束分类 空间对称性 空间相干性 维格纳分布函数 二阶矩 

分 类 号：O437[机械工程—光学工程]