A dual-axis, high-sensitivity atomic magnetometer

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

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.

Keywords: optically pumped magnetometers multi-axis field measurements high-sensitivity field measurements polarized atoms

Received: 16 July 2017
Revised: 25 August 2017
Accepted manuscript online:

PACS:	07.55.Ge	(Magnetometers for magnetic field measurements)
	07.07.Df	(Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing)
	42.81.Pa	(Sensors, gyros)

Fund: 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.

Corresponding Authors: Rujie Li, Rujie Li
E-mail: lirujie@buaa.edu.cn;quanwei@buaa.edu.cn

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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 2017 Chin. Phys. B 26 120702

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[1]	Observing the steady-state visual evoked potentials with a compact quad-channel spin exchange relaxation-free magnetometer Peng-Cheng Du(杜鹏程), Jian-Jun Li(李建军), Si-Jia Yang(杨思嘉), Xu-Tong Wang(王旭桐), Yan Zhuo(卓彦), Fan Wang(王帆), Ru-Quan Wang(王如泉). Chin. Phys. B, 2019, 28(4): 040702.

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A dual-axis, high-sensitivity atomic magnetometer

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