基于电光晶体平板部分相位调制动态产生涡旋光束  

Dynamic generation of vortex beam based on partial phase modulation of electro-optical crystal plate

作　　者：范钰婷 朱恩旭 赵超樱[1,2] 谭维翰 Fan Yu-Ting;Zhu En-Xu;Zhao Chao-Ying;Tan Wei-Han(School of Science,Hangzhou Dianzi University,Hangzhou 310018,China;State Key Laboratory of Quantum Optics and Quantum Optics Devices,Institute of Opto-Electronics,Shanxi University,Taiyuan 030006,China;Department of Physics,Shanghai University,Shanghai 200444,China)

机构地区：[1]杭州电子科技大学理学院,杭州310018 [2]山西大学光电研究所,量子光学与光量子器件国家重点实验室,太原030006 [3]上海大学物理系,上海200444

出　　处：《物理学报》2022年第20期295-304,共10页Acta Physica Sinica

基　　金：教育部量子光学重点实验室(批准号:KF201801,KF202004,KF202205)资助的课题。

摘　　要：随着现代光学各个领域对涡旋光束的潜在应用需求的增加,涡旋光束的产生引起了人们的极大兴趣.基于电光晶体平板,本文提出了一种利用Pockels效应产生涡旋光束的方法,在有限的相位调制区域内可以获得±2?的轨道角动量可调范围.模拟了光束在平板上的传输过程,研究了透射光束的轨道角动量模式谱.模式谱与仿真结果吻合较好.该方法可用于光通信和光操作等需要可调谐涡旋光束的领域.With the increasing demand for potential applications of vortex beams in various fields of modern optics,the generation of optical vortex beams has attracted great interest.Based on a flat plate made of an electrooptical crystal,a method to generate optical vortex beams assisted by the Pockels effect is proposed.This method allows an orbital-angular-momentum-tunable range of±2?with a finite phase-modulated region.We simulate the propagation of optical beams transmitted from the flat plate and investigate the orbital-angularmomentum-mode spectra of the transmitted optical beams.The mode spectra accord well with the simulation results.The proposed method will be applied to fields where tunable optical vortex beams are required,such as optical communication and optical manipulation.

关 键 词：相位调制 轨道角动量 涡旋光束 

分 类 号：O43[机械工程—光学工程]