Transition Dipole Moment Measurements of Ultracold Photoassociated ^(85)Rb^(133)Cs Molecules by Depletion Spectroscopy  

作　　者：Juan-Juan Cao Ting Gong Zhong-Hao Li Zhong-Hua Ji Yan-Ting Zhao Lian-Tuan Xiao Suo-Tang Jia 曹娟娟;宫廷;李中豪;姬中华;赵延霆;肖连团;贾锁堂(State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy,Shanxi University;Collaborative Innovation Center of Extreme Optics, Shanxi University)

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

出　　处：《Chinese Physics Letters》2018年第10期18-21,共4页中国物理快报（英文版）

基　　金：Supported by the National Key Research and Development Program of China under Grant No 2017YFA0304203;the National Natural Science Foundation of China under Grant Nos 61675120 and 11434007;the National Natural Science Foundation of China for Excellent Research Team under Grant No 61121064;the Shanxi Scholarship Council of China,the 1331KSC;the PCSIRT under Grant No IRT13076;the Applied Basic Research Project of Shanxi Province under Grant No 201601D202008

摘　　要：The transition dipole moments（TDMs） of ultracold85 Rb133 Cs molecules between the lowest vibrational ground level, （X^1Σ~＋（ v= 0, J= 1）, and the two excited rovibrational levels, 2~3Π0＋（v′= 10, J′= 2） and 2~1Π1（v′= 22,J′= 2）, are measured using depletion spectroscopy. The ground-state85 Rb133 Cs molecules are formed from cold mixed component atoms via the 2~3Π0-（ v= 11, J= 0） short-range level, then detected by time-of-flight mass spectrum. A home-made external-cavity diode laser is used as the depletion laser to couple the ground level and the two excited levels. Based on the depletion spectroscopy, the corresponding TDMs are then derived to be 3.5（2）×10^（-3）eαα and 1.6（1）×10^（-2）eαα, respectively, where 0）（60 represents the atomic unit of electric dipole moment. The enhance of TDM with nearly a factor of 5 for the 21Π1（v′= 22, J′= 2） excited level means that it has stronger coupling with the ground level. It is meaningful to find more levels with much more strong coupling strength by the represented depletion spectroscopy to realize direct stimulated Raman adiabatic passage transfer from scattering atomic states to deeply molecular states.The transition dipole moments（TDMs） of ultracold85 Rb133 Cs molecules between the lowest vibrational ground level, （X^1Σ~＋（ v= 0, J= 1）, and the two excited rovibrational levels, 2~3Π0＋（v′= 10, J′= 2） and 2~1Π1（v′= 22,J′= 2）, are measured using depletion spectroscopy. The ground-state85 Rb133 Cs molecules are formed from cold mixed component atoms via the 2~3Π0-（ v= 11, J= 0） short-range level, then detected by time-of-flight mass spectrum. A home-made external-cavity diode laser is used as the depletion laser to couple the ground level and the two excited levels. Based on the depletion spectroscopy, the corresponding TDMs are then derived to be 3.5（2）×10^（-3）eαα and 1.6（1）×10^（-2）eαα, respectively, where 0）（60 represents the atomic unit of electric dipole moment. The enhance of TDM with nearly a factor of 5 for the 21Π1（v′= 22, J′= 2） excited level means that it has stronger coupling with the ground level. It is meaningful to find more levels with much more strong coupling strength by the represented depletion spectroscopy to realize direct stimulated Raman adiabatic passage transfer from scattering atomic states to deeply molecular states.

关 键 词：TDM Cs Molecules by Depletion Spectroscopy Transition Dipole Moment Measurements of Ultracold Photoassociated RB 

分 类 号：O56[理学—原子与分子物理]