Chin. Phys. Lett.  2004, Vol. 21 Issue (6): 1075-1078    DOI:
Original Articles |
Four-Wave Mixing Scheme in a Four-Level Ladder-Type Atomic System Based on Electromagnetically Induced Transparency
LI Jia-Hua1 CHEN Ai-Xi2;PENG Ju-Cun3
1Department of Physics, Huazhong University of Science and Technology, Wuhan 430074 2Centre for Cold Atom Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071 3Department of Physics, Xiaogan Normal University, Xiaogan 432100
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LI Jia-Hua CHEN Ai-Xi, PENG Ju-Cun 2004 Chin. Phys. Lett. 21 1075-1078
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Abstract A nonlinear optical four-wave mixing scheme is presented and analysed for the generation of coherent light in a nearly four-level ladder-type atomic system in the context of electromagnetically induced transparency (EIT). We find that EIT can suppress nonlinear photon absorption and the peak of the generated mixing field is located at the centre of the transparency window where the loss is minimal, though there is a dip in the centre. Such a nonlinear optical process can also be used for generating coherent short-wavelength radiation.
Keywords: 42.50.Gy      42.50.Hz      42.65.Ky     
Published: 01 June 2004
PACS:  42.50.Gy (Effects of atomic coherence on propagation, absorption, and Amplification of light; electromagnetically induced transparency and Absorption)  
  42.50.Hz (Strong-field excitation of optical transitions in quantum systems; multiphoton processes; dynamic Stark shift)  
  42.65.Ky (Frequency conversion; harmonic generation, including higher-order harmonic generation)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2004/V21/I6/01075
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