Multi-channel generation of vortex beams with controllable polarization states and orbital angular momentum  

作　　者：吕子瑶 王潘 王长顺 Ziyao Lyu;Pan Wang;Changshun Wang(State Key Laboratory of Advanced Optical Communication Systems and Networks,School of Physics and Astronomy,Shanghai Jiao Tong University,Shanghai 200240,China;School of Data Science,The Chinese University of Hong Kong,Shenzhen 518172,China)

机构地区：[1]State Key Laboratory of Advanced Optical Communication Systems and Networks,School of Physics and Astronomy,Shanghai Jiao Tong University,Shanghai 200240,China [2]School of Data Science,The Chinese University of Hong Kong,Shenzhen 518172,China

出　　处：《Chinese Physics B》2023年第12期90-97,共8页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant No.92050116)。

摘　　要：Optical vortices with tunable polarization states and topological charges are widely investigated in various physical systems and practical devices for high-capacity optical communication.However,this kind of structured light beams is usually generated using several polarization and spatial phase devices,which decreases the configurability of optical systems.Here,we have designed a kind of polarized optical multi-vortices generator based on the Stokes-Mueller formalism and cross-phase modulation.In our scheme,multi-channel generation of polarized vortex beams can be realized through a single optical element and a single-input Gaussian beam.The polarization states and orbital angular momentum of the generated light beams are all-optically controllable.Furthermore,the proposed polarized optical multi-vortices generator has also been demonstrated experimentally through one-step holographic recording in an azobenzene liquid-crystalline film and the experimental results agree with theoretical analysis.

关 键 词：light field modulation HOLOGRAPHY optical vortex POLARIZATION 

分 类 号：TN929.1[电子电信—通信与信息系统] O436.3[电子电信—信息与通信工程]