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Chin. Opt. Lett.
 Home  List of Issues    Issue 08 , Vol. 15 , 2017    10.3788/COL201715.082302

Noise suppression for the detection laser of a nuclear magnetic resonance gyroscope based on a liquid crystal variable retarder
Binquan Zhou1;2, Guanqun Lei1;2, Linlin Chen1;2, Wenfeng Wu1;2, Zhuo Wang1;2, Xiaofeng Meng1;2, and Jiancheng Fang1;2
1 School of Instrumentation Science and Opto-Electronics Engineering, [Beihang University], Beijing 1 001 91 , China
2 [Key Laboratory on Inertial Technology], Beijing 100191, China

Chin. Opt. Lett., 2017, 15(08): pp.082302

Topic:Optical devices
Keywords(OCIS Code): 230.0230  020.0020  

In this Letter, the liquid crystal variable phase retarder is applied for the accurate modulation of the laser power in a detection system and the construction of a system that suppresses the influence of laser noise on the gyro’s bias instability. A closed-loop control method for a laser noise suppression system is proposed. We obtain a power stability index of 0.038% in a 3-h continuous test, and the nuclear magnetic resonance gyroscope bias instability reaches 1°/h. The proposed control method effectively improves the signal-to-noise ratio of the gyroscope detection signal, which lays the technical foundation for future research work.

Copyright: © 2003-2012 . This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Posted online:2017/6/12

Get Citation: Binquan Zhou, Guanqun Lei, Linlin Chen, Wenfeng Wu, Zhuo Wang, Xiaofeng Meng, and Jiancheng Fang, "Noise suppression for the detection laser of a nuclear magnetic resonance gyroscope based on a liquid crystal variable retarder," Chin. Opt. Lett. 15(08), 082302(2017)

Note: This work was supported by the National Natural Science Foundation of China (Nos. 61673041, 61673041, and 61227902) and the National High Technology Research and Development Program 863 (No. 2014AA123401).Author Contributions: Yueyang Zhai and Zhaohui Hu conceived and designed the experiments, Wei Quan performed the experiments, and Qing Liang analyzed the data.


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