Excitation Dependence of Dipole-Dipole Broadening in Selective Reflection Spectroscopy  

作　　者：孟腾飞 姬中华 赵延霆 肖连团 贾锁堂 

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

出　　处：《Chinese Physics Letters》2016年第11期39-42,共4页中国物理快报（英文版）

基　　金：Supported by the National Basic Research Program of China under Grant No 2012CB921603;the National Natural Science Foundation of China under Grant Nos 61275209,11304189,61378015 and 11434007;the Shanxi Scholarship Council of China;the Program for Changjiang Scholars and Innovative Research Team in Universities of China under Grant No IRT13076

摘　　要：We investigate the dipole-dipole broadened selective reflection spectrum with the Cs atomic aensity of 10^14- 10^15 cm^-3. The dipole-dipole broadening is reduced and the hyperfine splitting is well resolved when the ground state atoms are excited by a detuned pump beam. The dependences of dipoleMipole broadening of Cs atoms in the 6S1/2（F= 3） → 6P3/2（F＇= 4） hyperfine transition line on atomic density and the excitation factor are studied. It is found that the reduction of the dipole-dipole broadening is dependent on the pump beam power and is independent of the atomic density in this density range. These results are useful for understanding of the dynamical process in this range of atomic density.We investigate the dipole-dipole broadened selective reflection spectrum with the Cs atomic aensity of 10^14- 10^15 cm^-3. The dipole-dipole broadening is reduced and the hyperfine splitting is well resolved when the ground state atoms are excited by a detuned pump beam. The dependences of dipoleMipole broadening of Cs atoms in the 6S1/2（F= 3） → 6P3/2（F＇= 4） hyperfine transition line on atomic density and the excitation factor are studied. It is found that the reduction of the dipole-dipole broadening is dependent on the pump beam power and is independent of the atomic density in this density range. These results are useful for understanding of the dynamical process in this range of atomic density.

关 键 词：of in IS Excitation Dependence of Dipole-Dipole Broadening in Selective Reflection Spectroscopy 

分 类 号：O562[理学—原子与分子物理]