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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 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 |
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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.
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Received: 04 August 2022
Revised: 20 October 2022
Accepted manuscript online: 31 October 2022
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PACS:
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32.80.Qk
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(Coherent control of atomic interactions with photons)
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42.60.By
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(Design of specific laser systems)
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Corresponding Authors:
De-Sheng Lü
E-mail: dslv@siom.ac.cn
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Cite this article:
Zhen Zhang(张镇), Jing-Feng Xiang(项静峰), Bin Xu(徐斌), Pan Feng(冯盼), Guang-Wei Sun(孙广伟),Yi-Ming Meng(孟一鸣), Si-Min-Da Deng(邓思敏达), Wei Ren(任伟),Jin-Yin Wan(万金银), and De-Sheng Lü(吕德胜) Integrated, reliable laser system for an 87Rb cold atom fountain clock 2023 Chin. Phys. B 32 013202
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