A dual-axis, high-sensitivity atomic magnetometer

doi:10.1088/1674-1056/26/12/120702

中国物理B ›› 2017, Vol. 26 ›› Issue (12): 120702-120702.doi: 10.1088/1674-1056/26/12/120702

A dual-axis, high-sensitivity atomic magnetometer

Rujie Li(李茹杰), Wei Quan(全伟), Wenfeng Fan(范文峰), Li Xing(邢力), Zhuo Wang(王卓), Yueyang Zhai(翟跃阳), Jiancheng Fang(房建成)

School of Instrument Science and Opto-electronics Engineering, Beihang University, Beijing 100191, China

收稿日期:2017-07-16 修回日期:2017-08-25 出版日期:2017-12-05 发布日期:2017-12-05
通讯作者: Rujie Li, Rujie Li E-mail:lirujie@buaa.edu.cn;quanwei@buaa.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 61227902, 61673041, and 61374210), the National Key R & D Program of China (Grant No. 2016YFB0501601), and the Academic Excellence Foundation of Beihang University (BUAA) for PhD Students.

A dual-axis, high-sensitivity atomic magnetometer

Rujie Li(李茹杰), Wei Quan(全伟), Wenfeng Fan(范文峰), Li Xing(邢力), Zhuo Wang(王卓), Yueyang Zhai(翟跃阳), Jiancheng Fang(房建成)

School of Instrument Science and Opto-electronics Engineering, Beihang University, Beijing 100191, China

Received:2017-07-16 Revised:2017-08-25 Online:2017-12-05 Published:2017-12-05
Contact: Rujie Li, Rujie Li E-mail:lirujie@buaa.edu.cn;quanwei@buaa.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 61227902, 61673041, and 61374210), the National Key R & D Program of China (Grant No. 2016YFB0501601), and the Academic Excellence Foundation of Beihang University (BUAA) for PhD Students.

摘要/Abstract

摘要： Atomic magnetometer (AM) operated in a spin-exchange relaxation-free (SERF) regime features superior sensitivity and non-cryogenic operation, and thus is competitive with the best superconducting quantum interference devices. Previously, SERF AM with fT/Hz^1/2 level sensitivity commonly acted as a single-axis sensor. Here we demonstrate a dual-axis SERF AM capable of simultaneously and independently detecting x-and y-field components with a sensitivity of 20 fT/Hz^1/2. As there is no necessity to worry about the cross-talk effects arising from field modulations, the dual-axis scheme proposed here is of particular interest to AM array and hence the biomagnetic applications.

关键词: optically pumped magnetometers, multi-axis field measurements, high-sensitivity field measurements, polarized atoms

Abstract: Atomic magnetometer (AM) operated in a spin-exchange relaxation-free (SERF) regime features superior sensitivity and non-cryogenic operation, and thus is competitive with the best superconducting quantum interference devices. Previously, SERF AM with fT/Hz^1/2 level sensitivity commonly acted as a single-axis sensor. Here we demonstrate a dual-axis SERF AM capable of simultaneously and independently detecting x-and y-field components with a sensitivity of 20 fT/Hz^1/2. As there is no necessity to worry about the cross-talk effects arising from field modulations, the dual-axis scheme proposed here is of particular interest to AM array and hence the biomagnetic applications.

Key words: optically pumped magnetometers, multi-axis field measurements, high-sensitivity field measurements, polarized atoms

中图分类号: (Magnetometers for magnetic field measurements)

07.55.Ge

07.07.Df (Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing) 42.81.Pa (Sensors, gyros)

李茹杰, 全伟, 范文峰, 邢力, 王卓, 翟跃阳, 房建成. A dual-axis, high-sensitivity atomic magnetometer[J]. 中国物理B, 2017, 26(12): 120702-120702.

Rujie Li(李茹杰), Wei Quan(全伟), Wenfeng Fan(范文峰), Li Xing(邢力), Zhuo Wang(王卓), Yueyang Zhai(翟跃阳), Jiancheng Fang(房建成). A dual-axis, high-sensitivity atomic magnetometer[J]. Chin. Phys. B, 2017, 26(12): 120702-120702.

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A dual-axis, high-sensitivity atomic magnetometer

A dual-axis, high-sensitivity atomic magnetometer

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