中国激光, 2015, 42 (4): 0408003, 网络出版: 2015-02-02
基于法拉第旋转检测的铷原子磁力仪研究 
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Research of Rubidium Atomic Magnetometer Based on Faraday Rotation Detection
原子与分子物理学 原子磁力仪 光极化 法拉第旋转 灵敏度 atomic and molecular physics atomic magnetometer light polarization Faraday rotation sensitivity
摘要
基于线偏振光在充有被极化的铷原子的气室内传播时，在磁场的作用下会发生法拉第旋转这一现象，实现了一种基于法拉第旋转检测的铷原子矢量磁力仪。分析了它的工作原理，并测试了它对不同磁场的响应。测试结果表明，磁力仪灵敏度为1 pT/ Hz ，测量范围为±60 nT ，响应带宽为48 Hz。进一步研究了调制磁场和工作温度对铷原子磁力仪性能的影响，并提出了一些提高性能的方法。
Abstract
The polarization plane of linearly polarized light will rotate when it passes through polarized rubidium vapor under the influence of magnetic field. A rubidium atomic vector magnetometer is realized based on this phenomenon. The operation principle is analyzed and the main performance is tested. Test results show that its sensitivity reaches 1 pT/ Hz with measurement range of ±60 nT and bandwidth of 48 Hz . Some factors that influence the magnetometer performance such as magnetic field modulation and vapor cell temperature are discussed. Some methods to further improve the performance of the magnetometer are proposed.
丁志超, 李莹颖, 汪之国, 杨开勇, 袁杰. 基于法拉第旋转检测的铷原子磁力仪研究[J]. 中国激光, 2015, 42(4): 0408003. Ding Zhichao, Li Yingying, Wang Zhiguo, Yang Kaiyong, Yuan Jie. Research of Rubidium Atomic Magnetometer Based on Faraday Rotation Detection[J]. Chinese Journal of Lasers, 2015, 42(4): 0408003.
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