基于原子拉比共振的自由空间微波磁场探测研究  

Microwave Magnetic Field Detection Based on Atoms Rabi Resonance in Free Space

作　　者：茹宁 刘小赤 蒋志远 段俊毅 屈继峰[1] RU Ning;LIU Xiaochi;JIANG Zhiyuan;DUAN Junyi;QU Jifeng(National Institute of MetrologyjBeijing 100029,China)

机构地区：[1]中国计量科学研究院,北京100029

出　　处：《计量技术》2020年第5期19-24,共6页Measurement Technique

基　　金：国家自然科学基金资助项目(86567370);国家自然科学基金青年基金资助项目(56312680);中国计量科学研究院基本科研业务费项目(AKY1943)。

摘　　要：基于拉比共振的微波磁场测量技术,实现了在充入缓冲气体的铯原子气室和表面镀抗驰豫涂层的铷原子气室中测量微波磁场。我们开发了一套针对表面镀抗弛豫涂层的铷原子气室的实验装置,成功探测到铯原子和铷原子与相位调制的微波磁场相互作用时的拉比共振信号谱线。实验中对入射光强度和原子气室加热温度等参数进行了详细的研究和表征。得到了拉比共振信号幅值和线宽的最优值,实验结果与理论值相符合。Using a detection technique of microwave(MW)magnetic field based on Rabi resonance,the measurement of the microwave magnetic field is realized in the Cs vapor cells filled with buffer gas,and Rb vapor cells with anti-relaxation coating.With the development of a set of experimental equipment for the Rb vapor cells with anti-relaxa-tion coating,we observed Rabi resonance signal lines when alkali atoms interacted with a phase-modulated MW field.In the experiment,parameters such as incident light intensity and heated vapor cell temperature were studied and characterized in detail.The optimal amplitude and width of Rabi resonance lines were obtained,which was in agreement with the theoretical value.

关 键 词：拉比共振 微波磁场 相位调制 原子气室 缓冲气体 抗弛豫涂层 

分 类 号：TM937.1[电气工程—电力电子与电力传动]