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Electromagnetically induced transparency based six-wave mixing in a Doppler-broadened folded four-level system |
Niu Jin-Yan(牛金艳), Pei Li-Ya(裴丽娅), Wu Ling-An(吴令安), and Fu Pan-Ming (傅盘铭)†ger |
Laboratory of Optical Physics, Institute of Physics and Center for Condensed Matter, Chinese Academy of Sciences, Beijing 100190, China |
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Abstract We study phase-conjugate six-wave mixing spectroscopy based on electromagnetically-induced-transparency in a Doppler-broadened folded four-level system. It is found that the six-wave mixing spectrum can be either Doppler-free or very broad, depending on whether the interference between the polarisations of atoms with different velocities is constructive or destructive. To obtain the Doppler-free six-wave mixing spectrum in the folded four-level system, the conditions are more stringent in comparison with those in the cascade and N-type four-level systems. This polarisation interference can be controlled in the presence of a strong coupling field.
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Received: 08 March 2010
Revised: 25 May 2010
Accepted manuscript online:
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PACS:
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32.70.Jz
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(Line shapes, widths, and shifts)
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37.10.Vz
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(Mechanical effects of light on atoms, molecules, and ions)
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Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 10774185, 10974252, and 10674174), and the National Program for Basic Research in China (Grant No. 2006CB921107). |
Cite this article:
Niu Jin-Yan(牛金艳), Pei Li-Ya(裴丽娅), Wu Ling-An(吴令安), and Fu Pan-Ming (傅盘铭) Electromagnetically induced transparency based six-wave mixing in a Doppler-broadened folded four-level system 2010 Chin. Phys. B 19 113209
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