激光与光电子学进展, 2020, 57 (3): 030202, 网络出版: 2020-02-17
铯原子激发态6D5/2的超精细能级分裂结构测量 下载: 1754次
Hyperfine Energy Level Splitting Structure Measurement of the Excited State 6D5/2 for Cesium Atom
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 atomic and molecular physics hyperfine energy level splitting double resonance absorption spectrum quantum coherence narrow line-width
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852.335 nm或852.356 nm的泵浦光与波长为917.483 nm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。
Abstract
Based on the ladder-type atomic system of cesium ( 133Cs) 6S1/2-6P3/2-6D5/2, a pump light with a wavelength of 852.335 nm or 852.356 nm and probe light with a wavelength of 917.483 nm 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 Ahfs and electric quadrupole Bhfs are obtained as (-4.59±0.06) and (-0.78±0.66) MHz, respectively, which agree with values reported in the literature.
王志宏, 张锦芳, 曾昭卿, 闫奎志, 周海涛, 杨保东. 铯原子激发态6D5/2的超精细能级分裂结构测量[J]. 激光与光电子学进展, 2020, 57(3): 030202. Zhihong Wang, Jinfang Zhang, Zhaoqing Zeng, Kuizhi Yan, Haitao Zhou, Baodong Yang. Hyperfine Energy Level Splitting Structure Measurement of the Excited State 6D5/2 for Cesium Atom[J]. Laser & Optoelectronics Progress, 2020, 57(3): 030202.