Response optimization of a three-axis sensitive SERF magnetometer for closed-loop operation  

作　　者：周原锐 孙永泽 汪茜茜 秦佳男 张雪 王言章 Yuanrui Zhou;Yongze Sun;Xixi Wang;Jianan Qin;Xue Zhang;Yanzhang Wang(Key Laboratory of Geophysical Exploration Equipment(Ministry of Education),Jilin University,Changchun 130012,China;College of Instrumentation and Electrical Engineering,Jilin University,Changchun 130012,China;Department of Physics,Johannes Gutenberg-Universitat Mainz,55128 Mainz,Germany;Helmholtz-Institut,GSI Helmholtzzentrum fur Schwerioneforschung,55128 Mainz,Germany)

机构地区：[1]Key Laboratory of Geophysical Exploration Equipment(Ministry of Education),Jilin University,Changchun 130012,China [2]College of Instrumentation and Electrical Engineering,Jilin University,Changchun 130012,China [3]Department of Physics,Johannes Gutenberg-Universitat Mainz,55128 Mainz,Germany [4]Helmholtz-Institut,GSI Helmholtzzentrum fur Schwerioneforschung,55128 Mainz,Germany

出　　处：《Chinese Physics B》2024年第2期291-297,共7页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant No.42074216).

摘　　要：Most triaxial-vectorial magnetic field measurements with spin-exchange relaxation free(SERF)atomic magnetometer(AM)are based on the quasi-steady-state solution of the Bloch equation.However,the responding speed of these methods is greatly limited because the frequency of the modulation signal should be slow enough to ensure the validity of the quasi-steady-state solution.In this work,a new model to describe the response of the three-axis sensitive SERF AM with high modulation frequency is presented and verified.The response of alkali-atomic spin to high-frequency modulation field is further investigated by solving the Bloch equation in a modulation-frequency-dependence manner.This solution is well verified by our experiments and can offer a reference for selection of modulation frequencies.The result shows a potential to achieve a SERF AM operating in a geomagnetic field without heavy aluminum shielding when the modulation frequencies are selected properly.

关 键 词：triaxial-vectorial magnetic field measurement spin-exchange relaxation free atomic magnetometer 

分 类 号：P318.61[天文地球—固体地球物理学]