Visualized measurement of the electric field in large aperture LiNbO_3 crystal by digital holographic interferometry  

作　　者：卢智勇 孙建锋 周煜 张宁 孙志伟 刘立人 

机构地区：[1]Key Laboratory of Space Laser Communication and Detection Technology, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences

出　　处：《Chinese Optics Letters》2015年第2期33-36,共4页中国光学快报（英文版）

基　　金：supported by the National Nature Science Foundation of China(Nos.61275110 and 61108069);the Key Laboratory of Space Laser Communication and Detection Technology of Chinese Academy of Sciences

摘　　要：The electric field distribution in Li Nb O3 crystal under different electrode shape is presented by using the digital holographic interferometry. Three configurations of phase modulator including the rectangular electrode type,single-triangle electrode type, and dual-triangle electrode type are performed in this experiment. The nonuniform electric field distribution in these phase modulators are observed and the electric field increases with voltage increasing. The digital holographic interferometry with high electro-optic effect improves the measurement precision. The digital holographic interferometry provides an effective way for studying the electric field distribution. Such in situ quantitative analysis of electric field distribution is a key to optimizing electrode shape.The electric field distribution in Li Nb O3 crystal under different electrode shape is presented by using the digital holographic interferometry. Three configurations of phase modulator including the rectangular electrode type,single-triangle electrode type, and dual-triangle electrode type are performed in this experiment. The nonuniform electric field distribution in these phase modulators are observed and the electric field increases with voltage increasing. The digital holographic interferometry with high electro-optic effect improves the measurement precision. The digital holographic interferometry provides an effective way for studying the electric field distribution. Such in situ quantitative analysis of electric field distribution is a key to optimizing electrode shape.

关 键 词：Electric field measurement Electric fields ELECTRODES HOLOGRAPHY INTERFEROMETRY Modulators Phase modulation 

分 类 号：O436.1[机械工程—光学工程]