Arbitrary phase-locking in Mach-Zehnder interferometer

被引：4

作者：

Wu, Shuhe ^{[1
]}

Huang, Wenfeng ^{[1
]}

Yang, Peiyu ^{[1
]}

Liu, Shuqi ^{[1
]}

Chen, Liqing ^{[1
]}

机构：

[1] East China Normal Univ, Sch Phys & Mat Sci, State Key Lab Precis Spect, Shanghai 200062, Peoples R China

来源：

OPTICS COMMUNICATIONS | 2019年 / 442卷

基金：

中国国家自然科学基金; 上海市自然科学基金;

关键词：

Mach-Zehnder interferometer; Electro-optic modulator; Arbitrary phase locking; PID feedback; Precision measurement; LASER PHASE;

D O I：

10.1016/j.optcom.2019.03.031

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Based on the demand for the stability of the Mach-Zehnder optical interferometer, we proposed and designed a system that can achieve fast and precise locking at any phase point in one period. The locking system is simple and is easy to operate. The core elements are an electro-optic modulator (EOM), which can generate different phase shift on the vertically polarized light and horizontally polarized light, and a PID feedback. The experimental results show that for the MZ interferometer, the system can achieve fast, accurate and long-term locking at any phase point. The accuracy of the phase lock can be controlled within 1.05 degrees or 0.0029 lambda with the intensity of the interference beams of 0.335 mW. This locking technology can be applied in the field of precision measurement in the future.

引用

页码：148 / 151

页数：4

共 28 条

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