Visualized measurement of the electric field in large aperture LiNbO3 crystal by digital holographic interferometry |
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| Authors: | Zhiyong Lu;Jianfeng Sun;Yu Zhou;Ning Zhang;Zhiwei Sun;Liren Liu |
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| Institution: | Zhiyong Lu;Jianfeng Sun;Yu Zhou;Ning Zhang;Zhiwei Sun;Liren Liu;Key Laboratory of Space Laser Communication and Detection Technology, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences; |
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| Abstract: | 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. |
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