All-Optical Vector Cesium Magnetometer
Wei-Min Sun1,2 , Qiang Huang1,2 , Zong-Jun Huang2 , Ping-Wen Wang2 , Jun-Hai Zhang2,3**
1 College of Automation, Harbin Engineering University, Harbin 1500012 Key Lab of In-fiber Integrated Optics (Ministry Education), Harbin Engineering University, Harbin 1500013 Physics Department, University of Fribourg, Fribourg 1700, Switzerland
Abstract ：Based on power modulation of a pump laser and precessional projection detection, we present an all-optical vector magnetometer of cesium, which has a demonstrated magnitude sensitivity of 80 fT/Hz$^{1/2}$ and an orientation sensitivity of 0.1$^{\circ}$/Hz$^{1/2}$. In the device, four main factors are measured experimentally, which are the Larmor precession frequency of a polarized magnetic moment that depends on the modulus of the measured magnetic field only, two phase shifts and amplitude ratio of the precession projection in the two probe directions relative to the magnetic field orientation. This kind of magnetometer with high sensitivity in the range of the spatial angle is suitable for solving the inverse problem and geomagnetic navigation.
收稿日期: 2016-11-13
出版日期: 2017-04-29
:
85.70.Sq
(Magnetooptical devices)
42.62.Fi
(Laser spectroscopy)
33.57.+c
(Magneto-optical and electro-optical spectra and effects)
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2017, Vol. 34 
