Orbital angular momentum of the laser beam and the second order intensity moments

被引：0
|
作者：
高春清
魏光辉
HorstWeber
机构：
[1] Optical Engineering Department, Beijing Institute of Technology, Beijing 100081, China
[2] ,Optical Institute, Technical University Berlin, Strasse des 17. Juni 135, D-10623 Berlin, Germany
[3] ,Optical Engineering Department, Beijing Institute of Technology, Beijing 100081, China
来源：
Science China Mathematics | 2000年 / 12期
关键词：
orbital angular momentum; second order moments; beam characterization;
D O I：
暂无
中图分类号：
O342 [结构力学];
学科分类号：
080102 ;
摘要：
From the wave equation of a generalized beam the orbital angular momentum is studied. It is shown that the orbital angular momentum exists not only in the Laguerre-Gaussian beam, but in any beam with an angular-dependent structure. By calculating the second order intensity moments of the beam the relation between the orbital angular momentum and the second order moments 〈xθy〉, 〈yθx〉 is given. As an example the orbital angular momentum of the general astigmatic Gaussian beam is studied.
引用
收藏
页码：1306 / 1311
页数：6
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