Double-resonance optical-pumping effect and ladder-type electromagnetically induced transparency signal without Doppler background in cesium atomic vapour cell |
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Authors: | Yang Bao-Dong Gao Jing Liang Qiang-Bing Wang Jie Zhang Tian-Cai and Wang Jun-Min |
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Institution: | State Key Laboratory of Quantum Optics and Quantum Optics Devices, and Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, China |
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Abstract: | In a Doppler-broadened ladder-type cesium atomic system (6S1/2-6P3/2-8S1/2), this paper characterizes electromagnetically induced transparency (EIT) in two different experimental arrangements, and investigates the influence of the double-resonance optical-pumping (DROP) effect on EIT in both arrangements. When the probe laser is weak, DROP is explicitly suppressed. When the probe laser is moderate, population of the intermediate level (6P3/2 F'=5) is remarkable, therefore DROP is mixed with EIT. An interesting bimodal spectrum with the broad component due to DROP and the narrow part due to EIT has been clearly observed in cesium 6S1/2 F=4-6P3/2 F'=5-8S1/2 F"=4 transitions. |
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Keywords: | electromagnetically induced transparency double-resonance optical pumping laser spectroscopy |
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