Real-time measurement of the fast axis angle of a quarter-wave plate based on simultaneous phase shifting technique  

作　　者：杨坤 曾爱军 王向朝 王华 唐锋 

机构地区：[1]Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences [2]Shanghai Hengyi Optics and Fine Mechanics Co.,Ltd.

出　　处：《Chinese Optics Letters》2008年第8期568-571,共4页中国光学快报（英文版）

基　　金：the Key Basic Research Program of Science and Technology Commission of Shanghai Municipality (No.07JC14056);the National Natural Science Foundation of China (No.60578051);the Shanghai Rising-Star Program (No.06QB14047).

摘　　要：Real-time measurement of the fast axis angle of a quarter-wave plate based on simultaneous phase shifting technique is presented. The simultaneous phase shifting function is realized by an orthogonal grating, a diaphragm, an analyzer array, and a 4-quadrant detector. The intensities of the light beams from the four analyzers with different azimuths are measured simultaneously. The fast axis angle of the quarter-wave plate is obtained through the four light intensity values. In this method, rotating elements are not required, so real-time measurement is achieved.Real-time measurement of the fast axis angle of a quarter-wave plate based on simultaneous phase shifting technique is presented. The simultaneous phase shifting function is realized by an orthogonal grating, a diaphragm, an analyzer array, and a 4-quadrant detector. The intensities of the light beams from the four analyzers with different azimuths are measured simultaneously. The fast axis angle of the quarter-wave plate is obtained through the four light intensity values. In this method, rotating elements are not required, so real-time measurement is achieved.

关 键 词：Electromagnetic waves 

分 类 号：O436.3[机械工程—光学工程]