Effect of external magnetic field on the shift of resonant frequency in photoassociation of ultracold Cs atoms

作     者：李鹏伟 李玉清 冯国胜 武寄洲 马杰 肖连团 贾锁堂 Pengwei Li;Yuqing Li;Guosheng Feng;Jizhou Wu;Jie Ma;Liantuan Xiao;Suotang Jia

作者机构：State Key Laboratory of Quantum Optics and Quantum Optics Devices Institute of Laser SpectroscopyCollege of Physics and Electronics Engineering Shanxi University Collaborative Innovation Center of Extreme Optics Shanxi University 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2019年第28卷第1期

页      面：367-371页

核心收录：

学科分类：07[理学] 070203[理学-原子与分子物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 0704[理学-天文学] 0702[理学-物理学] 

基　　金：Project supported by the National Key Research and Development Program of China(Grant No.2017YFA0304203) the Chang Jiang Scholars and Innovative Research Team in the University of the Ministry of Education of China(Grant No.IRT13076) the National Natural Science Foundation of China(Grant Nos.61722507,61675121,61705123,and 11434007) the Fund for Shanxi 1331 Project Key Subjects Construction,China the Applied Basic Research Project of Shanxi Province,China(Grant No.201701D221002) 

主　　题：ultracold molecule photoassociation frequency shift 

摘      要：We study the influence of external magnetic field on the shift of the resonant frequency in the photoassociation of ultracold Cs atoms, which are captured in a magnetically levitated optical crossed dipole trap. With the increase of the photoassociation laser intensity, the linear variation of the frequency shift is measured by recording the photoassociation spectra of the long-range 0_u^+ state of Cs molecule below the 6S_(1/2)+ 6P_(1/2) dissociation limit at different magnetic *** slope of the frequency shift to the intensity of the photoassociation laser exhibits a strong dependence on the external magnetic field. The experimental data is simulated with an analytic theory model, in which a single channel rectangular potential with the tunable well depth is introduced to acquire the influence of the magnetic field on the atomic behavior in the effective range where photoassociation occurs.