Open AccessDesign of the self-oscillating loop of the optically pumped cesium magnetometer
Author(s) -
Liyue Xue,
Haobin Dong,
Wang Luo,
Jianhua Ge,
Huan Liu
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1754/1/012156
Subject(s) - magnetometer , signal (programming language) , caesium , loop (graph theory) , physics , phase (matter) , magnetic field , feedback loop , metre , phase locked loop , optics , materials science , acoustics , computer science , phase noise , mathematics , computer security , quantum mechanics , combinatorics , astronomy , nuclear physics , programming language
The self-oscillating loop is an important part of the optically pumped cesium magnetometer, and its working characteristics directly determine the accurate measurement of external magnetic field. The design of the self-oscillating loop has been discussed in this paper, including a signal conditioning circuit, a phase shifter and a frequency meter. It can be used to precisely improve the accuracy of resonance signal in a wide range of frequencies from 50 kHz to 350 kHz. The relative error of our system is less than 0.5×10 −6 and it has a good prospect in the optically pumped cesium magnetometer.