Polarization conversions of diffractive wave plates based on orthogonal circular-polarization holography  

作　　者：蔡鹏 王健豪 王长顺 曾鹏飞 李洪婧 

机构地区：[1]State Key Laboratory of Advanced Optical Communication Systems and Networks,Department of Physics and Astronomy, Shanghai Jiao Tong University [2]Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry,East China Normal University

出　　处：《Chinese Optics Letters》2016年第1期36-39,共4页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China (Nos. 11174203 and 11574211);the fund of the State Key Laboratory of Advanced Optical Communication Systems and Networks

摘　　要：A polarization holographic grating, which integrates the functions of a grating and a wave plate and is called a diffractive wave plate, is recorded by two beams （left and right circularly polarized） of a 532 nm laser in an azo polymer with a liquid-crystal structure. The polarization conversion characteristics of the diffractive wave plates are investigated with a detecting light of 650 nm by metering the polarization state of first-order diffracted light. It is confirmed that the diffractive wave plates convert the incident linear polarization into circular polarization for a linearly polarized probe laser and reverse the sense of rotation of the circular polarization when the detecting light is circularly polarized light.A polarization holographic grating, which integrates the functions of a grating and a wave plate and is called a diffractive wave plate, is recorded by two beams （left and right circularly polarized） of a 532 nm laser in an azo polymer with a liquid-crystal structure. The polarization conversion characteristics of the diffractive wave plates are investigated with a detecting light of 650 nm by metering the polarization state of first-order diffracted light. It is confirmed that the diffractive wave plates convert the incident linear polarization into circular polarization for a linearly polarized probe laser and reverse the sense of rotation of the circular polarization when the detecting light is circularly polarized light.

关 键 词：Circular polarization Crystal structure Diffraction gratings HOLOGRAPHY Light polarization Liquid crystals Optical devices Plates (structural components) 

分 类 号：O436.1[机械工程—光学工程] O438.1[理学—光学]