Open Accessstudy on sensitivity-related parameters of distributed feedback laser-pumped cesium atomic magnetometer
Author(s) -
Yuan Gu,
Rongye Shi,
Yanhui Wang
Publication year - 2014
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.63.110701
Subject(s) - caesium , magnetometer , laser , sensitivity (control systems) , materials science , intensity (physics) , absorption (acoustics) , buffer gas , optics , optoelectronics , physics , magnetic field , electronic engineering , quantum mechanics , engineering , nuclear physics
This article reports a distributed feedback (DFB) laser-pumped cesium atomic experimental magnetometer, showing how the sensitivity is influenced by the following 5 kinds of parameters: laser light intensity, laser frequency, radiofrequency intensity, temperature of cesium absorption cell, and the pressure of the buffer gas in the cell. Results of the experiments show that each of the five parameters has some influence on the sensitivity of the magnetometer, especially the laser frequency, radiofrequency intensity, and temperature of cesium absorption cell, which can even improve the sensitivity by 10 times. Recently we have obtained a sensitivity of 2.5 pT/Hz1/2.