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

ISSN号：1674-1056
期刊名称：《中国物理B：英文版》
时间：0
分类：O431.2[机械工程—光学工程;理学—光学;理学—物理] TN245[电子电信—物理电子学]
作者机构：[1]State Key Laboratory of Quantum Optics and Quantum Optics Devices, and Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, China, [2]College of Physics and Electronic Engineering, Shanxi University, Taiyuan 030006, China
相关基金：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）, and the Program for Science and Technology Star of Taiyuan, Shanxi, China （Grant No. 12024707）.

作者：杨保东[1,2], 何军[1], 王军民[1]

关键词：光抽运, 双共振, 磁光阱, 多光子, 非共振, 应用, 光谱, 铯, double-resonance optical pumping, electromagnetically induced transparency, two-color lasercooling, laser spectroscopy

中文摘要：

We present an investigation of double-resonance optical pumping(DROP) spectra under the condition of singlephoton frequency detuning based on a cesium 6S1/2–6P3/2–8S1/2ladder-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 copropagating 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.

英文摘要：

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.