中国物理B ›› 2023, Vol. 32 ›› Issue (1): 13202-013202.doi: 10.1088/1674-1056/ac9e95

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Integrated, reliable laser system for an 87Rb cold atom fountain clock

Zhen Zhang(张镇)1,2, Jing-Feng Xiang(项静峰)3, Bin Xu(徐斌)3, Pan Feng(冯盼)3, Guang-Wei Sun(孙广伟)3, Yi-Ming Meng(孟一鸣)1,2, Si-Min-Da Deng(邓思敏达)1,2, Wei Ren(任伟)3, Jin-Yin Wan(万金银)3, and De-Sheng Lü(吕德胜)1,3,†   

  1. 1 Key Laboratory of Quantum Optics and Center of Cold Atom Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China;
    2 College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 100049, China;
    3 Aerospace Laser Engineering Department, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
  • 收稿日期:2022-08-04 修回日期:2022-10-20 接受日期:2022-10-31 出版日期:2022-12-08 发布日期:2023-01-03
  • 通讯作者: De-Sheng Lü E-mail:dslv@siom.ac.cn

Integrated, reliable laser system for an 87Rb cold atom fountain clock

Zhen Zhang(张镇)1,2, Jing-Feng Xiang(项静峰)3, Bin Xu(徐斌)3, Pan Feng(冯盼)3, Guang-Wei Sun(孙广伟)3, Yi-Ming Meng(孟一鸣)1,2, Si-Min-Da Deng(邓思敏达)1,2, Wei Ren(任伟)3, Jin-Yin Wan(万金银)3, and De-Sheng Lü(吕德胜)1,3,†   

  1. 1 Key Laboratory of Quantum Optics and Center of Cold Atom Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China;
    2 College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 100049, China;
    3 Aerospace Laser Engineering Department, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
  • Received:2022-08-04 Revised:2022-10-20 Accepted:2022-10-31 Online:2022-12-08 Published:2023-01-03
  • Contact: De-Sheng Lü E-mail:dslv@siom.ac.cn

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摘要： We designed, assembled, and tested a reliable laser system for 87Rb cold atom fountain clocks. The laser system is divided into four modules according to function, which are convenient for installing, adjusting, maintaining, and replacing of the modules. In each functional module, all optical components are fixed on a baseplate with glue and screws, ensuring the system's structural stability. Mechanical stability was verified in a 6.11g RMS randomvibration test, where the change in output power before and after vibration was less than 5%. Thermal stability was realized by optimizing of the structure and appropriate selection of component materials of the modules through thermal simulation. In the laser splitting and output module, the change in laser power was less than 20% for each fiber in thermal cycles from 5 ℃ to 43 ℃. Finally, the functionality of the laser system was verified for a rubidium fountain clock.

关键词: cold atoms, laser system, atomic fountain clock, reliability

Abstract: We designed, assembled, and tested a reliable laser system for 87Rb cold atom fountain clocks. The laser system is divided into four modules according to function, which are convenient for installing, adjusting, maintaining, and replacing of the modules. In each functional module, all optical components are fixed on a baseplate with glue and screws, ensuring the system's structural stability. Mechanical stability was verified in a 6.11g RMS randomvibration test, where the change in output power before and after vibration was less than 5%. Thermal stability was realized by optimizing of the structure and appropriate selection of component materials of the modules through thermal simulation. In the laser splitting and output module, the change in laser power was less than 20% for each fiber in thermal cycles from 5 ℃ to 43 ℃. Finally, the functionality of the laser system was verified for a rubidium fountain clock.

Key words: cold atoms, laser system, atomic fountain clock, reliability

中图分类号:  (Coherent control of atomic interactions with photons)

  • 32.80.Qk
42.60.By (Design of specific laser systems)