Light-induced frequency shifts for the lowest vibrational levels of ultracold Cs2 in the molecular pure long-range 0^-g state  

作　　者：Ji-Zhou Wu Yu-Qing Li Wen-Liang Liu Jie Ma Lian-Tuan Xiao Suo-Tang Jia 

机构地区：[1]State Key Laboratory of Quantum Optics and Quantum Optics Devices,Institute of Laser Spectroscopy,Shanxi University,Taiyuan 030006,China [2]Collaborative Innovation Center of Extreme Optics,Shanxi University,Taiyuan 030006,China [3]College of Physics and Electronic Engineering,Shanxi University,Taiyuan 030006,China

出　　处：《Frontiers of physics》2020年第2期57-62,共6页物理学前沿（英文版）

基　　金：the National Key R&D Program of China(Grant No.2017YFA0304203);the Na-tional Natural Science Foundation of China(Grants Nos.61722507,61675121,and 61705123);PCSIRT(No.IRT-17R70),111 Project(Grant No.D18001);the Program for the Outstanding Innovative Teams of Higher Learning Institutions of Shanxi(OIT);the Fund Program for the Scientific Activities of Selected Returned Overseas Professionals in Shanxi Province,and the Applied Basic Research Project of Shanxi Province,China(Grant Nos.201701D221002,201901D211191,and 201901D211188).

摘　　要：The light-induced frequency shift(LIFS)of ultracold molecular ro-vibrational levels originates from the strong coupling of the atomic-scattering state and the bound-molecular state.In this paper,we present our experimental determination of the LIFSs of the lowest vibrational levels(v=0,1)in the purely long-range 0^-g state of ultracold cesium molecules.A high-resolution double photoassociation spectroscopy is developed,which serves as frequency ruler to measure the frequency shifts of the lowest molecular levels for Cs2.The experimental results are qualitatively consistent with the theoretical expectations.

关 键 词：LIGHT-INDUCED frequency shift ULTRACOLD molecule double PHOTOASSOCIATION spectroscopy LONG-RANGE STATE 

分 类 号：O56[理学—原子与分子物理]