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  • Received: Feb. 22, 2020

    Accepted: Apr. 16, 2020

    Posted: Jun. 9, 2020

    Published Online: Jun. 11, 2020

    The Author Email: Yuan Yao (yyao@lps.ecnu.edu.cn), Yanyi Jiang (yyjiang@phy.ecnu.edu.cn)

    DOI: 10.3788/COL202018.070201

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    Yuxin Sun, Yuan Yao, Yaqin Hao, Hongfu Yu, Yanyi Jiang, Longsheng Ma. Laser stabilizing to ytterbium clock transition with Rabi and Ramsey spectroscopy[J]. Chinese Optics Letters, 2020, 18(7): 070201

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Chinese Optics Letters, Vol. 18, Issue 7, 070201 (2020)

Laser stabilizing to ytterbium clock transition with Rabi and Ramsey spectroscopy

Yuxin Sun, Yuan Yao*, Yaqin Hao, Hongfu Yu, Yanyi Jiang**, and Longsheng Ma

Author Affiliations

  • State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China

Abstract

A cavity-stabilized 578 nm laser is used to probe the clock transition of ytterbium atoms trapped in optical lattice sites. We obtain a Fourier-limited 4.2-Hz-linewidth Rabi spectrum and a Ramsey spectrum with fringe linewidth of 3.3 Hz. Based on one of the spectra, the 578 nm laser light is frequency-stabilized to the center of the transition to achieve a closed-loop operation of an optical clock. Based on interleaved measurement, the frequency instability of a single optical clock is demonstrated to be 5.4 × 10?16/√τ.

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