Switch of orbital angular momentum flux density of partially coherent vortex beams

被引：1
|
作者：
Zhang, Yongtao [1 ]
Cai, Yangjian [2 ,3 ]
Gbur, Greg [4 ]
机构：
[1] Minnan Normal Univ, Sch Phys & Informat Engn, Key Lab Light Field Manipulat & Syst Integrat Appl, Zhangzhou 363000, Peoples R China
[2] Shandong Normal Univ, Shandong Prov Engn & Tech Ctr Light Manipulat, Sch Phys & Elect, Jinan 250358, Peoples R China
[3] Shandong Normal Univ, Sch Phys & Elect, Shandong Prov Key Lab Opt & Photon Devices, Jinan 250358, Peoples R China
[4] Univ North Carolina Charlotte, Dept Phys & Opt Sci, Charlotte, NC 28277 USA
来源：
OPTICS EXPRESS | 2023年 / 31卷 / 23期
基金：
中国国家自然科学基金;
关键词：
CORRELATION SINGULARITIES; PHASE SINGULARITIES; LIGHT; VORTICES; DRIVEN;
D O I：
10.1364/OE.503442
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We investigate the orbital angular momentum (OAM) flux density of beams which are the incoherent superposition of partially coherent vortex (PCV) beams with different topological charges and beam widths. Simulation results show that such beams can exhibit counter-rotating radial regions of the OAM flux density, and that we can "switch" the order of these regions by adjusting the topological charges and beam widths in the source plane. Furthermore, these counter-rotating regions can switch on propagation in free space without any change to the beam parameters. We discuss how these unusual OAM dynamics may find use in OAM-based applications.
引用
收藏
页码：38004 / 38012
页数：9
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