Acta Optica Sinica, Volume. 43, Issue 19, 1914002(2023)

Laser Frequency Shift and Stabilization of Atomic Fountain Based on Electro-Optic Modulation

Weijing Zhao1,2, Yao Li1,2, Richang Dong3, and Rong Wei1,2、*
Author Affiliations
  • 1Key Laboratory for Quantum Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
  • 2University of Chinese Academy of Sciences, Beijing 100049, China
  • 3Innovation Academy for Microsatellites of Chinese Academy of Sciences, Shanghai 200120, China
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    Figures & Tables(8)
    Experimental setup. (a) Schematic diagram of frequency shift device; (b) physical image of large aperture saturated absorption optical path
    Energy level transfer diagram
    Relationship between modulation output and power of each level of FEOM
    Relationsheep between saturated absorption signal and spot diameter. (a) Changes of transition signal with spot diameter; (b) changes of SNR of saturated absorption signal stripe with spot diameter; (c) relationsheep between saturated absorption error signal and laser power when spot diameters are 3 mm and 8 mm, respectively; (d) changes of error signal slope with laser power
    Saturated absorption signals before and after modulation. (a) Signal before modulation; (b) signal after modulation; (c) signal with increased spot diameter after modulation; (d) error signal after modulation
    Cold atom cloud in MOT center
    Change of signal with time during frequency stabilization. (a) Saturation absorption error signal (illustration: acquisition error signal) (Note: error signal after locking slightly deviates from 0 is due to small gain of laser locking control system, which does not affect normal operation of experiment); (b) number of atoms falling into detection zone
    Main optical link of atomic fountain clock. (a) Optical path; (b) all fiber link
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    Weijing Zhao, Yao Li, Richang Dong, Rong Wei. Laser Frequency Shift and Stabilization of Atomic Fountain Based on Electro-Optic Modulation[J]. Acta Optica Sinica, 2023, 43(19): 1914002

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    Paper Information

    Category: Lasers and Laser Optics

    Received: Mar. 1, 2023

    Accepted: Apr. 26, 2023

    Published Online: Oct. 23, 2023

    The Author Email: Rong Wei (weirong@siom.ac.cn)

    DOI:10.3788/AOS230611

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