中国物理B ›› 2010, Vol. 19 ›› Issue (11): 113209-113401.doi: 10.1088/1674-1056/19/11/113209

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Electromagnetically induced transparency based six-wave mixing in a Doppler-broadened folded four-level system

牛金艳, 裴丽娅, 吴令安, 傅盘铭   

  1. Laboratory of Optical Physics, Institute of Physics and Center for Condensed Matter, Chinese Academy of Sciences, Beijing 100190, China
  • 收稿日期:2010-03-08 修回日期:2010-05-25 出版日期:2010-11-15 发布日期:2010-11-15
  • 基金资助:
    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).

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   

  1. Laboratory of Optical Physics, Institute of Physics and Center for Condensed Matter, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2010-03-08 Revised:2010-05-25 Online:2010-11-15 Published:2010-11-15
  • Supported by:
    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).

摘要: 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.

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.

Key words: six-wave mixing, electromagnetically induced transparency, polarisation interference

中图分类号:  (Line shapes, widths, and shifts)

  • 32.70.Jz
37.10.Vz (Mechanical effects of light on atoms, molecules, and ions)