High efficiency generation of tunable ellipse perfect vector beams

查看全文 作　　者：LIN [1]LI;CHENLIANG [1,2]CHANG;CAOJIN [1]YUAN;SHAOTONG [1]FENG;SHOUPING [1]NIE;ZHI-CHENG [2]REN;HUI-TIAN [2]WANG;JIANPING [2]DING

机构地区：[1]Jiangsu Key Laboratory for Opto-Electronic Technology, School of Physics and Technology, Nanjing Normal University;[2]National Laboratory of Solid State Microstructures and School of Physics, Nanjing University

出　　处：《Photonics Research》索引2018年第6卷第12期,共8页

基　　金：National Key R&D Program of China (2018YFA0306200);National Natural Science Foundation of China (NSFC) (91750202,11474156,61605080,61775097);China Postdoctoral Science Foundation (2016M601775) 摘　　要：We present a highly efficient method of generating and shaping ellipse perfect vector beams (EPVBs) with a prescribed ellipse intensity profile and continuously variant linear polarization state. The scheme is based on the coaxial superposition of two orthogonally polarized ellipse laser beams of controllable phase vortex serving as the base vector components. The phase-only computer-generated hologram is specifically designed by means of a modified iteration algorithm involving a complex amplitude constraint, which is able to generate an EPVB with high diffraction efficiency in the vector optical field generator. We experimentally demonstrate that the efficiency of generating the EPVB has a notable improvement from 1.83% in the conventional complex amplitude modulation based technique to 11.1% in our method. We also discuss and demonstrate the simultaneous shaping of multiple EPVBs with independent tunable ellipticity and polarization vortex in both transversal (2D) and axial (3D) focusing structures, proving potentials in a variety of polarization-mediated applications such as trapping and transportation of particles in more complex geometric circumstances. 关键词：SHAPING ELLIPTICAL PERFECT vector beam (EPVBs) EPVB HOLOGRAM The polarization mediated

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High efficiency generation of tunable ellipse perfect vector beams

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