CPT Magnetometer with Atomic Energy Level Modulation  

作　　者：刘国宾 杜润昌 刘朝阳 顾思洪 

机构地区：[1]Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071 [2]Graduate School, Chinese Academy of Sciences, Beijing 100080

出　　处：《Chinese Physics Letters》2008年第2期472-474,共3页中国物理快报（英文版）

基　　金：Supported by National Natural Science Foundation of China under Grant Nos 10574141 and 10675162.

摘　　要：We propose and experimentally investigate a coherent population trapping state based magnetometer prototype with ^87Rb atoms. Through modulating Zeeman sublevels with an ac magnetic field, not only a phase sensitive detection scheme suitable for miniature magnetometer is realized, but also the detection resolution of magnetic field intensity could be improved by a factor of two. Our study result indicates that it is a promising low power consumption miniature sensitive low magnetic field sensor offering spatially resolved measurement at the sub-millimetre level.We propose and experimentally investigate a coherent population trapping state based magnetometer prototype with ^87Rb atoms. Through modulating Zeeman sublevels with an ac magnetic field, not only a phase sensitive detection scheme suitable for miniature magnetometer is realized, but also the detection resolution of magnetic field intensity could be improved by a factor of two. Our study result indicates that it is a promising low power consumption miniature sensitive low magnetic field sensor offering spatially resolved measurement at the sub-millimetre level.

关 键 词：PHASE COHERENCE CLOCKS 

分 类 号：O562[理学—原子与分子物理]