铯原子激发态6D5/2的超精细能级分裂结构测量  

Hyperfine Energy Level Splitting Structure Measurement of the Excited State 6D5/2 for Cesium Atom

作　　者：王志宏 张锦芳[1] 曾昭卿 闫奎志 周海涛 杨保东[1] Wang Zhihong;Zhang Jinfang;Zeng Zhaoqing;Yan Kuizhi;Zhou Haitao;Yang Baodong(College of Physics and Electronic Engineering,Shanxi University,Taiyuan,Shanxi 030006,China;School of Basic Medical Sciences,Shanxi Medical University,Taiyuan,Shanxi 030001,China)

机构地区：[1]山西大学物理电子工程学院,山西太原030006 [2]山西医科大学基础医学院,山西太原030001

出　　处：《激光与光电子学进展》2020年第3期73-79,共7页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(11774210,61575112,61975102);国家重点研发计划(2017YFA0304502);山西省高等学校科技创新项目(2019L0101)。

摘　　要：基于铯原子(133Cs)6S1/2-6P3/2-6D5/2阶梯型原子系统,将波长为852.335nm或852.356nm的泵浦光与波长为917.483nm的探测光反向布局于室温下的铯原子气室中,获得了窄线宽、高信噪比的6P3/2-6D5/2超精细能级跃迁的双共振吸收光谱。利用声光调制器建立的"标尺",可测得激发态6D5/2超精细能级分裂结构的全部频率间隔,进而得到该态的磁偶极超精细常数Ahfs为(-4.59±0.06)MHz,电四极超精细常数Bhfs为(-0.78±0.66)MHz,这与相关文献报道的结果一致。Based on the ladder-type atomic system of cesium(133Cs)6S1/2-6P3/2-6D5/2,apump light with a wavelength of 852.335nm or 852.356nm and probe light with a wavelength of 917.483nm were inversely arranged in a 133Cs vapor cell at room temperature.Accordingly,a double resonance absorption spectrum of 6P3/2-6D5/2 hyperfine energy level transition with narrow line-width and high signal-to-noise ratio is obtained.Subsequently,all the frequency intervals of the hyperfine energy level splitting structure of the excited state 6D5/2 are measured using a"ruler"built with an acousto-optic modulator.Finally,the hyperfine constants of magnetic dipole Ahfsand electric quadrupole Bhfsare obtained as(-4.59±0.06)and(-0.78±0.66)MHz,respectively,which agree with values reported in the literature.

关 键 词：原子与分子物理学 超精细能级分裂 双共振吸收光谱 量子相干 窄线宽 

分 类 号：O562.31[理学—原子与分子物理]