Chinese Optics Letters, Volume. 22, Issue 10, 101201(2024)

High-sensitivity closed-loop three-axis atomic magnetometer using two elliptically polarized laser beams

Yeguang Yan1...2, Jixi Lu1,2,3,*, Kun Wang1,2, Fei Lu1,2, Shaowen Zhang1,2, Ziao Liu1,2,3, Xiaoyu Li1,2,3, and Binquan Zhou1,23 |Show fewer author(s)
Author Affiliations
  • 1Key Laboratory of Ultra-Weak Magnetic Field Measurement Technology, Ministry of Education, School of Instrumentation and Optoelectronic Engineering, Beihang University, Beijing 100191, China
  • 2Zhejiang Provincial Key Laboratory of Ultra-Weak Magnetic-Field Space and Applied Technology, Hangzhou Innovation Institute, Beihang University, Hangzhou 310051, China
  • 3Hefei National Laboratory, Hefei 230088, China
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    Figures & Tables(9)
    Schematic of the three-axis atomic magnetometer developed with two elliptically polarized lights.
    Schematic of the closed-loop control system.
    Setup of the three-axis SERF magnetometer. PMF, polarization-maintaining fiber; CL, collimating lens; QWP, quarter-wave plate; HWP, half-wave plate; PD, photodiode; TIA, trans-impedance amplifier; LIA, lock-in amplifier.
    The scale factor of the atomic magnetometer under different laser detunings and intensities.
    The scale factor of the atomic magnetometer with a modulation frequency of 1 kHz under different amplitudes of the modulation field.
    The single-axis sensitivity of the magnetometer along the y axis.
    The sensitivity of the three-axis atomic magnetometer. The average sensitivity is 14 fT/Hz1/2 along the x axis, 11 fT/Hz1/2 along the y axis, and 25 fT/Hz1/2 along the z axis.
    The bandwidth of the three-axis magnetometer operated under different regimes. (a) The three-axis bandwidth is about 150, 90, and 180 Hz along the x, y, and z axes, respectively, under the open-loop regime. (b) The measurement bandwidth is 240, 200, and 280 Hz along the three orthogonal axes under the closed-loop regime.
    The response of the three-axis magnetometer with respect to the three-axis magnetic field under the condition of the closed-loop control. The response signals for different magnitudes of the input magnetic field along the (a) x, (b) y, and (c) z axes are measured.
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    Yeguang Yan, Jixi Lu, Kun Wang, Fei Lu, Shaowen Zhang, Ziao Liu, Xiaoyu Li, Binquan Zhou, "High-sensitivity closed-loop three-axis atomic magnetometer using two elliptically polarized laser beams," Chin. Opt. Lett. 22, 101201 (2024)

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    Paper Information

    Category: Instrumentation, Measurement, and Optical Sensing

    Received: Nov. 17, 2023

    Accepted: May. 16, 2024

    Posted: May. 16, 2024

    Published Online: Oct. 12, 2024

    The Author Email: Jixi Lu (lujixi@buaa.edu.cn)

    DOI:10.3788/COL202422.101201

    CSTR:32184.14.COL202422.101201

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