A Coil Constant Calibration Method Based on the Phase-Frequency Response of Alkali Atomic Magnetometer

Photonic Sensors, Jan 2019

We propose an in-situ method to calibrate the coil constants of the optical atomic magnetometer. This method is based on measuring the Larmor precession of spin polarized alkali metal atoms and has been demonstrated on a K-Rb hybrid atomic magnetometer. Oscillation fields of different frequencies are swept on the transverse coil. By extracting the resonance frequency through phase-frequency analysis of electron spin projection, the coil constants are calibrated to be 323.1 ± 0.28 nT/mA, 108 ± 0.04 nT/Ma, and 185.8 ± 1.03 nT/mA along the X, Y, and Z directions, respectively.

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A Coil Constant Calibration Method Based on the Phase-Frequency Response of Alkali Atomic Magnetometer

Photonic Sensors pp 1–8 | Cite as A Coil Constant Calibration Method Based on the Phase-Frequency Response of Alkali Atomic Magnetometer AuthorsAuthors and affiliations Han YaoDanyue MaJunpeng ZhaoJixi LuMing Ding Open Access Regular First Online: 18 January 2019 36 Downloads Abstract We propose an in-situ method to calibrate the coil constants of the optical atomic magnetometer. This method is based on measuring the Larmor precession of spin polarized alkali metal atoms and has been demonstrated on a K-Rb hybrid atomic magnetometer. Oscillation fields of different frequencies are swept on the transverse coil. By extracting the resonance frequency through phase-frequency analysis of electron spin projection, the coil constants are calibrated to be 323.1 ± 0.28 nT/mA, 108 ± 0.04 nT/Ma, and 185.8 ± 1.03 nT/mA along the X, Y, and Z directions, respectively. KeywordsOptical atomic magnetometer coil constant calibration phase-frequency analysis Larmor precession  This article is published with open access at Springerlink.com Download to read the full article text Notes Acknowledgement This work received the support of the National Key R&D Program of China (Grant No. 2017YFB0503100) and the National Natural Science Foundation of China (NSFC) (Grant No. 61227902). Both these two funding agencies give suggestions on selecting the critical technical problems and official financial help on the implementation of experiments. References [1] I. K. Kominis, T. W. Kornack, J. C. Allred, and M. V. Romalis, “A subfemtotesla multichannel atomic magnetometer,” Nature, 2003, 422(6932): 596–599.ADSCrossRefGoogle Scholar [2] J. C. Allred, R. N. Lyman, T. Kornack, and M. Romalis, “High-sensitivity atomic magnetometer unaffected by spin-exchange relaxation,” Physical Review Letters, 2002, 89(13): 130801–1–130801–4.ADSCrossRefGoogle Scholar [3] Y. Chen, W. 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Authors and Affiliations Han Yao1Danyue Ma1Junpeng Zhao1Jixi Lu1Ming Ding1Email author1.School of Instrumentation Science and Opto-electronics EngineeringBeihang UniversityBeijingChina


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Han Yao, Danyue Ma, Junpeng Zhao, Jixi Lu, Ming Ding. A Coil Constant Calibration Method Based on the Phase-Frequency Response of Alkali Atomic Magnetometer, Photonic Sensors, 2019, 1-8, DOI: 10.1007/s13320-019-0530-4