Chinese Journal of Quantum Electronics, Volume. 41, Issue 5, 761(2024)

Design of integrated optical system for high‑precision cold atom interferometer

GE Guiguo1...2, FANG Jie1, HE Meng1,2, LI Jinting1,2, ZHANG Danfang1,2, CHEN Xi1,*, ZHONG Jiaqi1, ZHANG Xiaowei1, WANG Jin1,3,4,**, and ZHAN Mingsheng1,34 |Show fewer author(s)
Author Affiliations
  • 1Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, China
  • 2University of Chinese Academy of Sciences, Beijing 100049, China
  • 3Hefei National Laboratory, Hefei 230094, China
  • 4Wuhan Institute of Quantum Technology, Wuhan 430206, China
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    An integrated optical system for cold 85Rb atom interferometer is designed and implemented in this work. The system includes five fiber-connected modules, and the size of the entire optical system is only 400 mm × 483 mm × 133 mm. This integrated and modular optical system is beneficial for further engineering and miniaturization of atomic interferometers. An active temperature control method is adopted to improve the stability of the optical system, and the long-term stability of laser intensity reaches 4.3 × 10-3@5000 s. This optical system has been successfully applied to an atom interferometer, and the interference fringes with a free evolution time of 71 ms and a contrast of 20% are obtained. The phase uncertainty of a single fringe is 22 mrad, and the corresponding gravitational measurement uncertainty is 26 μGal. The design and implementation of this optical system lays the foundation for the miniaturization and practical application of atom interferometers.

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    Guiguo GE, Jie FANG, Meng HE, Jinting LI, Danfang ZHANG, Xi CHEN, Jiaqi ZHONG, Xiaowei ZHANG, Jin WANG, Mingsheng ZHAN. Design of integrated optical system for high‑precision cold atom interferometer[J]. Chinese Journal of Quantum Electronics, 2024, 41(5): 761

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    Paper Information

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    Received: Mar. 15, 2023

    Accepted: --

    Published Online: Jan. 8, 2025

    The Author Email: CHEN Xi (chenxi@apm.ac.cn), WANG Jin (wangjin@apm.ac.cn)

    DOI:10.3969/j.issn.1007-5461.2024.05.006

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