| ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Off-resonant double-resonance optical-pumping spectra and their application in a multiphoton cesium magneto-optical trap |
| Yang Bao-Dong (杨保东)a b, He Jun (何军)a, Wang Jun-Min (王军民)a |
a State Key Laboratory of Quantum Optics and Quantum Optics Devices, and Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, China;
b College of Physics and Electronic Engineering, Shanxi University, Taiyuan 030006, China |
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Abstract 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 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.
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Received: 06 November 2013
Revised: 28 December 2013
Accepted manuscript online:
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PACS:
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42.50.Gy
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(Effects of atomic coherence on propagation, absorption, and Amplification of light; electromagnetically induced transparency and Absorption)
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32.80.Xx
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(Level crossing and optical pumping)
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37.10.De
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(Atom cooling methods)
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42.62.Fi
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(Laser spectroscopy)
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| Fund: 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). |
Corresponding Authors:
Wang Jun-Min
E-mail: wwjjmm@sxu.edu.cn
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| About author: 42.50.Gy; 32.80.Xx; 37.10.De; 42.62.Fi |
Cite this article:
Yang Bao-Dong (杨保东), He Jun (何军), Wang Jun-Min (王军民) Off-resonant double-resonance optical-pumping spectra and their application in a multiphoton cesium magneto-optical trap 2014 Chin. Phys. B 23 054205
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