Off-resonant double-resonance optical-pumping spectra and their application in a multiphoton cesium magneto-optical trap  

作　　者：杨保东 何军 王军民 

机构地区：[1]State Key Laboratory of Quantum Optics and Quantum Optics Devices,and Institute of Opto-Electronics,Shanxi University [2]College of Physics and Electronic Engineering,Shanxi University

出　　处：《Chinese Physics B》2014年第5期296-301,共6页中国物理B（英文版）

基　　金：Project supported by the National Basic Research Program of China(Grant No.2012CB921601);the National Natural Science Foundation of China(Grant Nos.11104172,11274213,61205215,and 61227902);the Project for Excellent Research Teams of the National Natural Science Foundation of China(Grant No.61121064);the Research Project for Returned Abroad Scholars from Universities of Shanxi Province,China(Grant No.2012-015);the Program for Science and Technology Star of Taiyuan,Shanxi,China(Grant No.12024707)

摘　　要：We present an investigation of double-resonance optical pumping （DROP） spectra under the condition of single-photon frequency detuning based on a cesium 6S1/2-6P3/2-8S1/2 ladder-type system with a room-temperature vapor cell. Two DROP peaks are found, and their origins are explored. One peak has a narrow linewidth due to the atomic coherence for a counterpropagating configuration; the other peak has a broad linewidth, owing to the spontaneous decay for a coprop-agating configuration. This kind of off-resonant DROP spectrum can be used to control and offset-lock a laser frequency to a transition between excited states. We apply this technique to a multiphoton cesium magneto-optical trap, which can efficiently trap atoms on both red and blue sides of the two-photon resonance.We present an investigation of double-resonance optical pumping （DROP） spectra under the condition of single-photon frequency detuning based on a cesium 6S1/2-6P3/2-8S1/2 ladder-type system with a room-temperature vapor cell. Two DROP peaks are found, and their origins are explored. One peak has a narrow linewidth due to the atomic coherence for a counterpropagating configuration; the other peak has a broad linewidth, owing to the spontaneous decay for a coprop-agating configuration. This kind of off-resonant DROP spectrum can be used to control and offset-lock a laser frequency to a transition between excited states. We apply this technique to a multiphoton cesium magneto-optical trap, which can efficiently trap atoms on both red and blue sides of the two-photon resonance.

关 键 词：double-resonance optical pumping electromagnetically induced transparency two-color lasercooling laser spectroscopy 

分 类 号：O482.5[理学—固体物理]