Optically pumped quantum Mx–MR magnetometer with high oscillating magnetic field *Project supported by the National Natural Science Foundation of China (Grant No. 61475192) and the Science Research Program of National University of Defense Technology, China (Grant No. JC140702). (August 2015)

• Record Type: Journal Article
• Authors: Ding, Zhi-Chao; Yuan, Jie; Wang, Zhi-Guo; Yang, Kai-Yong; Luo, Hui
• Is Part Of: Chinese physics B. Volume 24:Number 8(2015:Aug.)
• Page Start: 202
• Publication Date: 2015-08
• Subjects: Physics -- Periodicals; Physics; Periodicals; 530.05
• DOI: 10.1088/1674-1056/24/8/083202
• Languages: English
• ISSNs: 1674-1056

Abstract

<abstract> <title>Abstract</title> <p>A dip of the transverse component of the magnetic moment as a function of resonance frequency-detuning will emerge when the intensity of oscillating magnetic field exceeds a specific value, which is demonstrated theoretically and experimentally. The linewidth of magnetic-resonance signal can be much smaller than when the <italic>M</italic>_{<italic>x</italic>}–<italic>M</italic>_{<italic>R</italic>} magnetometer operates on condition that the intensity of oscillating magnetic field is smaller than this specific value, and the <italic>M</italic>_{<italic>x</italic>}–<italic>M</italic>_{<italic>R</italic>} magnetometer can possess a much higher signal-to-noise ratio. The experimental result shows that the sensitivity of <italic>M</italic>_{<italic>x</italic>}–<italic>M</italic>_{<italic>R</italic>} magnetometer can be improved by an order of magnitude under this condition.</p> </abstract>