中国物理B ›› 2007, Vol. 16 ›› Issue (2): 429-434.doi: 10.1088/1009-1963/16/2/024

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Enhancement of Kerr nonlinearity with vanishing absorption in a tripod scheme

孙辉, 钮月萍, 龚尚庆   

  1. State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, 201800, China
  • 收稿日期:2006-02-11 修回日期:2006-09-01 出版日期:2007-02-20 发布日期:2007-02-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 60478002) and the Key Basic Research Foundation of Shanghai (Grant Nos 04JC14036 and 05DJ14003).

Enhancement of Kerr nonlinearity with vanishing absorption in a tripod scheme

Sun Hui(孙辉), Niu Yue-Ping(钮月萍), and Gong Shang-Qing(龚尚庆)†   

  1. State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
  • Received:2006-02-11 Revised:2006-09-01 Online:2007-02-20 Published:2007-02-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 60478002) and the Key Basic Research Foundation of Shanghai (Grant Nos 04JC14036 and 05DJ14003).

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摘要： The giant enhancement of Kerr nonlinearity in a four-level tripod type system is investigated theoretically. By tuning the value of the Rabi frequency of the coherent control field, owing to the double dark resonances, the giant-enhanced Kerr nonlinearity can be achieved within the right transparency window. The influence of Doppler broadening is also discussed.

关键词: Kerr nonlinearity, dark resonance, transparency window, Doppler broadening

Abstract: The giant enhancement of Kerr nonlinearity in a four-level tripod type system is investigated theoretically. By tuning the value of the Rabi frequency of the coherent control field, owing to the double dark resonances, the giant-enhanced Kerr nonlinearity can be achieved within the right transparency window. The influence of Doppler broadening is also discussed.

Key words: Kerr nonlinearity, dark resonance, transparency window, Doppler broadening

中图分类号:  (Phase conjugation; photorefractive and Kerr effects)

  • 42.65.Hw
42.50.Gy (Effects of atomic coherence on propagation, absorption, and Amplification of light; electromagnetically induced transparency and Absorption)