Realization and Investigation of Relative Experimental Parameter of Coherent Population Trapping Frequency Standard
DU Run-chang1,2,LIU Guo-bin1,2,CHEN Jie-hua1,2,WANG Jin1,3,LIU Chao-yang1, GU Si-hong1,3*
1.Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China 2.Graduate School of Chinese Academy of Sciences, Beijing 100039, China 3.Center for Cold Atom Physics, Chinese Academy of Sciences, Wuhan 430071, China
Abstract：It is desirable for an atomic frequency standard that clock transition signal is of both high S/N rate and narrow linewidth.While for a passive coherent population trapping (CPT) frequency standard, increasing S/N rate is at the expense of en-widened lidnewidth, therefore it is crucial to choose a proper combination of S/N rate and linewidth.The present paper presents the experimental results of our systematically study on the relations between clock transition signal and parameters such as temperature and laser intensity with an optical table top CPT frequency standard.The obtained results provide us the criterion of choosing the combination of S/N rate and lidnewidth.The paper also presents experimental study results of de-coherent effect caused by unperfect circular polarization laser.Those experimental results were the good reference in the realization of CPT frequency standard, and they are also the general reference to CPT phenomenon and CPT frequency standard studies.
Key words：Coherent population trapping;Atomic frequency standard;Rubidium atoms
杜润昌1,2,刘国宾1,2,陈杰华1,2,王谨1,3,刘朝阳1,顾思洪1,3*. 相干布居数囚禁原子频标的实现及相关实验参数研究[J]. 光谱学与光谱分析, 2008, 28(08): 1697-1700.
DU Run-chang1,2,LIU Guo-bin1,2,CHEN Jie-hua1,2,WANG Jin1,3,LIU Chao-yang1, GU Si-hong1,3*. Realization and Investigation of Relative Experimental Parameter of Coherent Population Trapping Frequency Standard. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2008, 28(08): 1697-1700.
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