In-situ real-time magnetic field measurement based on optically-detected electron paramagnetic resonance of spin-polarized rubidium

被引：1

作者：

Zou, Sheng ^{[1
,2
,3
,4
]}

Zhang, Quanzhe ^{[1
,2
,3
]}

Huo, Yujia ^{[1
,2
,3
]}

Zhang, Hong ^{[1
,4
]}

机构：

[1] Beihang Univ, Sch Instrumentat & Optoelect Engn, Beijing 100191, Peoples R China

[2] Beihang Univ, Hangzhou Innovat Inst, Hangzhou 310051, Peoples R China

[3] Hefei Natl Lab, Hefei 230088, Peoples R China

[4] Natl Inst Extremely Weak Magnet Field Infrastruct, Hangzhou 310051, Peoples R China

来源：

MEASUREMENT SCIENCE AND TECHNOLOGY | 2025年 / 36卷 / 04期

基金：

中国国家自然科学基金; 北京市自然科学基金;

关键词：

electron paramagnetic resonance; residual magnetic field; real-time measurement system; spin-polarized atoms;

D O I：

10.1088/1361-6501/adc3b3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present an approach for in-situ and real-time detection of axial magnetic fields using electron paramagnetic resonance of spin-polarized 87Rb atoms. Our method leverages optically detected peaks in the magnetic resonance dispersion curves, combined with a custom frequency tracking and locking circuit, to enable precise measurements with robust tracking capabilities. In our experiments, the axial magnetic field was measured to be 7.5461 +/- 0.0026 nT, with a system noise level of 8.83 f T Hz-1/2. These results lay a strong foundation for applying the magnetometer in geomagnetic environments.

引用

页数：11

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