Bell⁃Bloom型Cs⁃<sup>4</sup>He光泵磁力仪可行性研究

doi:10.3969/j.issn.1000-1158.2025.01.14

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Abstract With its high accuracy， the Cs-⁴He optically pump magnetometer has an important position in the field of magnetic field measurement. However， its sensitivity is still not ideal， which greatly limits its applications. Based on the magnetic response experimental data of the Cs-⁴He optically pumped magnetometer，the practical limitations of its sensitivity， primarily due to radiofrequency （RF） broadening is analyzed. To improve its sensitivity， a research approach that combines the Bell-Bloom principle with the Cs-⁴He optically pumped magnetometer is proposed. Here using optical field modulation instead of RF magnetic field modulation， which is expected to reduce the impact of RF broadening， thereby significantly enhancing the magnetometer’s magnetic field detection sensitivity. Theoretical calculations suggest that this approach could improve the sensitivity of the Cs-⁴He optically pumped magnetometer by one-third. In addition， the mentioned research also focuses on the analysis and discussion of the feasible working range of the scheme. By comparing the angular momentum exchange rate formed by spin-exchange collision， Penning ionization and the Ramel precession frequency caused by the magnetic field， the working magnetic field range of the Bell-Bloom Cs-⁴He optical pump magnetometer is given.

Key words： magnetic metrology Cs-⁴He magnetometer optical pump Bell-Bloom principle Lamore precession angular momentum exchange

Received: 20 May 2024 Published: 14 January 2025

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TB972

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	CHEN Haoran
	FU Jiqing
	KONG Jia

Cite this article:

CHEN Haoran,FU Jiqing,KONG Jia. Feasible Scheme of Bell⁃Bloom Cs⁃⁴He Optically Pump Magnetometer[J]. Acta Metrologica Sinica, 2025, 46(1): 87-91.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2025.01.14 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2025/V46/I1/87

1	LEE S K， SAUER K L， SELTZER S J， et al. Subfemtotesla radio-frequency atomic magnetometer for detection of nuclear quadrupole resonance ［J］. Applied Physics Letters， 2006， 89（21）： 1-2.
2	SAFRONOVA M S， BUDKER D， DEMILLE D， et al. Search for new physics with atoms and molecules ［J］. Reviews of Modern Physics， 2018， 90（2）： 025008.
10	SHIFRIN V Y， ALEXANDROV E B， CHIKVADZE T I， et al. Magnetic flux density standard for geomagnetometers ［J］. Metrologia， 2000， 37： 219-227.
20	DMITRIEV S P， DOVATOR N A， KARTOSHKIN V A， et al. Observation of polarized alkali atoms in experiments on optical orientation in a He?Rb and He?Cs mixture under conditions of a pulsed gas discharge［J］.Journal of Physics Conference Series，2018，1135（1）： 1-6.
3	HU Y， IWATA G Z， MOHAMMADI M， et al. Sensitive magnetometry reveals inhomogeneities in charge storage and weak transient internal currents in Li-ion cells ［J］. Proceedings of the National Academy of Sciences， 2020， 117（20）： 10667-10672.
13	BLINOV E V， ZHITNIKOV R A， KULESHOV P P. Alkali-helium magnetometer.［J］. Sov Tech Phys Lett， 1979. 24（336） 588-596.
23	WANG M L， WANG M B， Zhang G Y， et al. Study of the optimal duty cycle and pumping rate for square?wave amplitude?modulated Bell?Bloom magnetometers［J］.Chinese Physics B， 2016， 25（6）： 060701
4	DANG H B， MALOOF A C， ROMALIS M V. Ultrahigh sensitivity magnetic field and magnetization measurements with an atomic magnetometer ［J］. Applied Physics Letters， 2010， 97（15）： 1-3.
14	FU J Q， HE W， XIANG P， et al. A Laser?Pumped Cs?4He Magnetometer for Metrology［C］// 2018 Conference on Precision Electromagnetic Measurements （CPEM 2018. Paris， France， 2018. doi： 10.1109/CPEM.2018.8501178.
24	SELTZER S J. Developments in alkali?metal atomic magnetometry.［D］. Princeton University， 2008.
9	BUDKER D， ROMALIS M. Optical magnetometry［J］. Nature physics， 2007， 3（4）： 227-234.
19	HE S J， JING H， QU Y X， et al. Dynamics of hollow cathode discharge using fluid models with and without metastable atom involvement in helium［J］.Journal of Physics D， 2019， 52 （9）： 1-12.
5	SHENG D， PERRY A R， KRZYZEWSKI S P， et al. A microfabricated optically?pumped magnetic gradiometer ［J］. Applied physics letters， 2017， 110（3）： 1-4.
15	LI S ， ZHANG Y ， TIAN Y ，et al.Faraday?rotation Bell?Bloom atomic magnetometer using an alternating pump?probe beam［J］.Journal of Applied Physics， 2021， 130（8）： 084501.
25	KOMINIS I K， KORNACK T W， ALLRED J C， et al. A subfemtotesla multichannel atomic magnetometer［J］. Nature， 2003， 422（6932）： 596-599.
6	GROEGER S， BISON G， KNOWLES P E， et al. Laser?pumped cesium magnetometers for high?resolution medical and fundamental research ［J］. Sensors and Actuators A： Physical， 2006， 129（1-2）： 1-5.
16	BELL W E， BLOOM A L. Optically driven spin precession［J］. Physical Review Letters， 1961， 6（6）： 280.
8	JIANG M， SU H， GARCON A， et al. Search for axion?like dark matter with spin?based amplifiers［J］. Nature Physics， 2021， 17（12）： 1402-1407.
18	YANG C， ZUO G H， TIAN Z Z， et al. Influence of pump light on sensitivity of magnetometer based on linearly polarized Bell?Bloom structure［J］. Acta Phys Sin ， 2019， 68（9）： 090701. doi： 10.7498/aps.68.20190030.
11	PARK P G， KIM Y G， KIM W S， et al. DC Magnetic flux density standards in the range of earth magnetic field［C］// XX IMEKO World Congress-Metrology for Green Growth. Busan， Republic of Korea， 2012.
21	SELTZER S J. Developments in alkali?metal atomic magnetometry［M］. Princeton University， 2008.
7	BOTO E， HOLMES N， LEGGETT J， et al. Moving magnetoencephalography towards real?world applications with a wearable system［J］. Nature， 2018， 555（7698）： 657-661.
17	伏吉庆，贺青，张伟. 激光泵浦的铯?氦磁力仪的信号特征［J］. 计量学报， 2020， 41（3）： 354-358. FU J Q， HE Q， ZHANG W. Signal Characteristics of the Laser?pumped Cesium?Helium Magnetometer［J］.Acta Metrologica Sinica， 2020， 41（3）： 354-358.
12	伏吉庆，张伟，贺青. 磁感应强度基准技术评述［J］. 计量学报， 2019， 40（4）： 700-703. FU J Q， ZHANG W， HE Q. Review of the Technologies of the Magnetic Flux Density Base Standard［J］.Acta Metrologica Sinica， 2019， 40（4）： 700-703.
22	DMITRIEV S P ， DOVATOR N A ， KARTOSHKIN V A . Spin exchange and chemi?ionization during collisions of polarized metastable helium atoms with ground?state cesium atoms［J］. Technical Physics， 1999， 44（9）：1033-1037.