铯原子磁光阱中冷原子的缀饰态光谱  

Dressed-Atom Spectra of Cold Cesium Atoms Trapped in a Magneto-Optical trap

作　　者：杨保东[1] 梁强兵[1] 杨建峰[1] 张天才[1] 王军民[1] 

机构地区：[1]山西大学光电研究所量子光学与光量子器件国家重点实验室,山西太原030006

出　　处：《光学学报》2010年第11期3124-3127,共4页Acta Optica Sinica

基　　金：国家自然科学基金(60978017;610178051;10974125;60821004);教育部新世纪优秀人才支持计划(NCET-07-0524);国家重大科学研究计划(2006CB921102);高等学校博士点专项科研经费(20070108003)资助课题

摘　　要：在磁光阱中的铯原子由于冷却光的存在将被缀饰化。借助于波长为852.3 nm(对应于铯原子6S1/2F=4→6P3/2F′=3和6S1/2F=4→6P3/2F′=4超精细跃迁)和794.6 nm(对应于铯原子6P3/2F′=5→8S1/2F″=4超精细跃迁)的探测光的透射光谱分别对磁光阱中冷原子基态6S1/2F=4和激发态6P3/2F′=5在冷却光作用下形成的缀饰态分裂进行了实验研究,并分析了其光谱特性。结果表明,在冷却光强度、失谐量相同的实验条件下,基态、激发态的缀饰分裂间距相同,与缀饰态理论预言一致。Due to the strong cooling laser,the cesium cold atoms trapped in a magneto-optical trap are dressed.The dressed splitting was observed arising from cooling laser for the ground state 6S1/2 F=4 and excited state 6P3/2 F′=5 using the probe laser with the wavelengths of 852.3 nm（corresponding to the transitions of 6S1/2 F=4→6P3/2 F′=3 and 6S1/2 F=4→6P3/2 F′=4 of cesium atom） and 794.6 nm（corresponding to the transition of 6P3/2 F′=5 and 8S1/2 F″=4 of cesium atom）,respectively,and their spectral properties were analysed.The results show that the dressed splitting for the ground state 6S1/2 F=4 is the same with that for the excited state 6P3/2 F′=5 for the same intensity and detuning of cooling laser,which is consistent with the prediction based on the dressed state theory.

关 键 词：原子与分子物理学 缀饰态 冷原子 磁光阱 

分 类 号：O433[机械工程—光学工程]