Acta Optica Sinica, Volume. 40, Issue 18, 1802001(2020)

Design of Compact 85Rb Fountain Optical Path Based on Profile Gridded Platform

Qingchen Ji1,2, Richang Dong3, Qian Wang2, Ning Zhang2, Weijing Zhao2, Yan Wang1、*, and Rong Wei2、**
Author Affiliations
  • 1Department of Physics, Shanghai University, Shanghai 200444, China
  • 2Key Laboratory for Quantum Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
  • 3Institution of Navigation Satellite, Innovation Academy for Microsatellites, Chinese Academy of Sciences, Shanghai 201203, China
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    The atomic fountain clock is one cold atom applied apparatus possessing important applications. Compact laser system design is one of the key techniques for a portable cold atomic fountain clock. This paper introduces a gridded optical platform built with the general aluminum profiles, and based on it, we construct a compact optical path for the 85Rb fountain clock. Through simulation, it is proved that the profile gridded platform has better mechanical properties in two-dimensional direction. On this platform, we design and build the modules of such as four-pass frequency shift, injection locked amplifier, cooling optical path, repumping and probing paths to satisfy all requirements of an atomic fountain clock. The platform covers an area of 50 cm×50 cm and has a height of 2.5-3 cm. The optical path has been running continuously for more than 8 months with a power fluctuation less than 5%. Based on the compact optical system, we have completed the subsequent physical and microwave experiments of 85Rb fountain clocks.

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    Qingchen Ji, Richang Dong, Qian Wang, Ning Zhang, Weijing Zhao, Yan Wang, Rong Wei. Design of Compact 85Rb Fountain Optical Path Based on Profile Gridded Platform[J]. Acta Optica Sinica, 2020, 40(18): 1802001

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    Paper Information

    Category: Atomic and Molecular Physics

    Received: Apr. 30, 2020

    Accepted: Jun. 9, 2020

    Published Online: Aug. 28, 2020

    The Author Email: Wang Yan (yanwang@staff.shu.edu.cn), Wei Rong (weirong@siom.ac.cn)

    DOI:10.3788/AOS202040.1802001

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