原子气室工作温度对CPT磁力仪品质因子的影响  

Study on Effect of Working Temperature of Vapor Cell on Quality Factor of CPT Magnetometer

作　　者：桑建芝 康海霞 卢向东[1,2] 孙晓洁 王学锋[1,2] SANG Jlan-zhi;KANG Hai-xia;LU Xiang-dong;SUN Xiao-jie;WANG Xue-feng(Quantum Engineering Research Center of CASC,Beijing 100094;Beijing Institute of Aerospace Control Devices,Beijing 100039)

机构地区：[1]中国航天科技集团有限公司量子工程研究中心,北京100094 [2]北京航天控制仪器研究所,北京100039

出　　处：《导航与控制》2018年第5期37-41,共5页Navigation and Control

基　　金：国防科技项目基金(编号:0343007)

摘　　要：原子气室的工作温度是影响CPT磁力仪灵敏度的重要参数,研究表明,基于品质因子优化后的气室温度大于基于幅值优化后的气室温度。通过设计实验装置,测试多种气压原子气室工作温度与信号品质因子的变化关系,给出幅值、线宽与原子气室温度变化的关系曲线。CP实验结果表明,T与利用幅值优化后气室温度相比,品质因子优化后原子气室的最佳工作温度点可有效提高CPT磁力仪灵敏度。The working temperature of vapor cell is an important parameter affecting the sensitivity of CPT magnetometer. Research shows that the vapor cell.s temperature optimized by the quality factor is bigger than the vapor cell.s temperature optimized by the amplitude. Firstly, the article proves that the temperature of the atomic vapor cell optimized by quality factor is larger than the temperature of the atomic vapor cell optimized by the amplitude. Then from the aspect of designing experimental testing system, the relationship between quality factor of CPT signal and the temperature of vapor cell is established under the vapor cell filled with different pressure. The relationship between amplitude, line width of CPT signal and the temperature of vapor cell are calculated also. Experiment results shows that, compared with the temperature of vapor cell optimized by the amplitude, the best working temperature of vapor cell optimized by the quality factor can improve the sensitivity of CPT magnetometer.

关 键 词：原子磁力仪 CPT磁力仪 品质因子 原子跃迁能级 

分 类 号：P716.82[天文地球—海洋科学]