哈尔滨工程大学学报Issue(12)：1617-1620,4.DOI:10.3969/j.issn.1006-7043.201301043
地磁场对铯原子磁力仪共振谱线的影响
Effect of the geomagnetic field on the resonance spectral lines of the Cs magnetometer
摘要
Abstract
In order to study the effect of the geomagnetic field on cesium magnetometer sensitivity , the Breit-Rabi e-quation is used to analyze the Zeeman splitting of the Fg=4 level of Cs atoms.The emphasis is on the analysis of the nonlinear Zeeman effect on the resonant hyperfine spectrum of the all-optical atomic magnetometer in the geo-magnetic field which is about 0.05 mT.The results show that the effect would cause the line-width to increase from 20 Hz to 53 Hz, and the amplitude to decrease by relatively 50%.If any accessional noise is not taken into ac-count, our cesium magnetometer sensitivity will deteriorate from 0.3 pT/Hz1/2 to 1.6 pT/Hz1/2.That showed a tech-nical bottleneck of improving atomic magnetometer sensitivity in the geomagnetic field .A new technique of pumping from Fg=4 to Fe=4 is proposed to break through this bottleneck .关键词
铯原子磁力仪/共振谱线/地磁场/超精细结构/非线性塞曼效应/谱线宽度Key words
Cs magnetometer/resonance spectral line/geomagnetic field/hyperfine structure/nonlinear Zeeman effect/line width分类
数理科学引用本文复制引用
李庆萌,张军海,曾宪金,黄强,孙伟民..地磁场对铯原子磁力仪共振谱线的影响[J].哈尔滨工程大学学报,2013,(12):1617-1620,4.基金项目
中央高校基本科研业务专项基金资助项目（ HEUCF20111111）；教育部111引智基地基金资助项目（ B13015）． （）
