All-Optical Vector Cesium Magnetometer  

作　　者：孙伟民 黄强 黄宗军 王平稳 张军海 

机构地区：[1]College of Automation, Harbin Engineering University, Harbin 150001 [2]Key Lab of In-fiber Integrated Optics (Ministry Education), Harbin Engineering University, Harbin 150001 [3]Physics Department, University of Fribourg, Fribourg 1700, Switzerland

出　　处：《Chinese Physics Letters》2017年第5期124-127,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos U1631239 and U1331114;the 111 Project to Harbin Engineering University under Grant No B13015

摘　　要：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 80fF/Hz^1/2 and an orientation sensitivity of 0.1°/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 m^gnetic 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.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 80fF/Hz^1/2 and an orientation sensitivity of 0.1°/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 m^gnetic 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.

关 键 词：All-Optical Vector Cesium Magnetometer 

分 类 号：TM936[电气工程—电力电子与电力传动]