激光束的分类

基金项目:

华中科技大学激光技术国家重点实验室资助项目

详细信息

Laser beam classification

1.
Institute of Laser Physics and Chemistry, Sichuan University, Chengdu, 610064;
2.
National Laboratory of Laser Technology, HUST, Wuhan, 430074

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。对各类激光束的独立特征参数及其联系作了分析。
- 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
Abstract: 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.
- laser beam classification /
- spatial symmetry /
- spatial coherence /
- Wigner distribution function /
- second-order moment

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