Detection of the power-exponent-phase vortex beams by interference

被引：2
|
作者：
Ye, Ziwei [1 ]
Bai, Yihua [1 ]
Yang, Yuanjie [1 ]
机构：
[1] Univ Elect Sci & Technol China, Sch Phys, Chengdu 610054, Peoples R China
来源：
FIRST OPTICS FRONTIER CONFERENCE | 2021年 / 11850卷
关键词：
Power-exponent-phase vortex beam; interference; topological charge detection; power-exponent parameter detection; ORBITAL ANGULAR-MOMENTUM; LIGHT-BEAMS; PROPAGATION; COMMUNICATION; GENERATION;
D O I：
10.1117/12.2599756
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We introduce a method for detecting the topological charge of power-exponential-phase vortex beam(PEPVB) and its power-exponent parameter by using a Laguerre-Gaussian beam that interferes with a PEPVB. The intensity shows a unique flower pattern after interference. According to the number of petals l - l(0) and the topological charge of LG light l(0), we can obtain the topological charge of the PEPVB l. One of the most significant characteristics of PEPVB is the petals in the interference pattern become narrower clockwise. Moreover, the angle of the largest petal Delta phi gradually decreases with an increasing power-exponent parameter. By measuring the angle phi(1), phi(2), the value of the power-exponent parameter.. can be calculated.
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页数：5
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