Characterizing the phase profile of a vortex beam with angular-double-slit interference

被引：34
|
作者：
Liu, Ruifeng [1 ]
Long, Junling [1 ]
Wang, Feiran [1 ]
Wang, Yunlong [1 ]
Zhang, Pei [1 ]
Gao, Hong [1 ]
Li, Fuli [1 ]
机构：
[1] Xi An Jiao Tong Univ, Dept Appl Phys, MOE Key Lab Nonequilibrium Synth & Modulat Conden, Xian 710049, Peoples R China
来源：
JOURNAL OF OPTICS | 2013年 / 15卷 / 12期
基金：
中国国家自然科学基金;
关键词：
vortex beam; orbital angular momentum; angular-double-slit interference; GAUSSIAN LASER MODES; MOMENTUM; LIGHT; PHOTON;
D O I：
10.1088/2040-8978/15/12/125712
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The diffracted intensity distribution of a Laguerre-Gaussian beam is studied with an angular-double-slit interferometer. We experimentally demonstrate that the spiral phase structure of a vortex beam can be clearly revealed in this interference geometry, and it gives us an efficient way to distinguish different orders of Laguerre-Gaussian beams. This angular-double-slit interferometer gives us a better understanding of the phase structure of a vortex beam and the interference phenomenon of vortex beams.
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页数：5
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