Measuring topological charge of partially coherent elegant Laguerre-Gaussian beam

被引：23
作者：
Dong, Miao [1 ]
Lu, XingYuan [2 ]
Zhao, Chengliang [2 ]
Cai, Yangjian [2 ,3 ]
Yang, Yuanjie [1 ,4 ]
机构：
[1] Univ Elect Sci & Technol China, Sch Phys, Chengdu, Sichuan, Peoples R China
[2] Soochow Univ, Sch Phys Sci & Technol, Suzhou 215006, Peoples R China
[3] Shandong Normal Univ, Ctr Light Manipulat & Applicat, Sch Phys & Elect, Jinan 250014, Shandong, Peoples R China
[4] Natl Univ Singapore, Dept Elect & Comp Engn, Singapore 117583, Singapore
来源：
OPTICS EXPRESS | 2018年 / 26卷 / 25期
基金：
中国国家自然科学基金;
关键词：
ORBITAL ANGULAR-MOMENTUM; SPATIAL CORRELATION-PROPERTIES; OPTICAL VORTICES; COMPLEX ARGUMENT; SINGULARITIES; PROPAGATION; STANDARD; INTENSITY; LIGHT;
D O I：
10.1364/OE.26.033035
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The partially coherent elegant Laguerre-Gaussian (ELG) beam is of importance and exhibits extraordinary characteristics in many fields, such as optical communications and optical trapping. Here, we show a method to measure the topological charge of a partially coherent ELG beam. We find that the number of ring dislocations in the far-field complex degree of coherence is equal to the topological charge vertical bar l vertical bar of a partially coherent ELG beam. and which is confirmed experimentally. Our results will be useful for applications using partially coherent ELG beams. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
引用
收藏
页码：33035 / 33043
页数：9
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