中国物理B ›› 2006, Vol. 15 ›› Issue (2): 383-388.doi: 10.1088/1009-1963/15/2/025

• CLASSICAL AREAS OF PHENOMENOLOGY • 上一篇    下一篇

Trichromatic phase manipulation of the response of a two-level medium to an arbitrarily intense probe field

郭洪菊, 胡响明, 李景艳, 李晓霞, 石文星, 徐清   

  1. Department of Physics, Huazhong Normal University, Wuhan 430079,China
  • 收稿日期:2005-08-09 修回日期:2005-10-11 出版日期:2006-02-20 发布日期:2006-02-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 60378008).

Trichromatic phase manipulation of the response of a two-level medium to an arbitrarily intense probe field

Guo Hong-Ju (郭洪菊), Hu Xiang-Ming (胡响明), Li Jing-Yan (李景艳), Li Xiao-Xia (李晓霞), Shi Wen-Xing (石文星), Xu Qing (徐清)   

  1. Department of Physics, Huazhong Normal University, Wuhan 430079,China
  • Received:2005-08-09 Revised:2005-10-11 Online:2006-02-20 Published:2006-02-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 60378008).

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摘要： The phase dependence and independence of the response of a trichromatically driven two-level medium to an arbitrarily intense probe field have been studied. The sum of the relative phases of the sideband components of the trichromatic field compared to the central component plays a crucial role in the response of the medium. For a weak probe field, as the sum of the relative phases changes from $0$ to $\pi $, multiple switching can be achieved, in which switching from normal to anomalous dispersion occurs in multiple separate frequency regimes. The remarkable dependence on the sum phase is also shown for a strong probe field. On the other hand, when the sum of the two relative phases is fixed, the changes in the respective phases have no influence on the response of the medium.

Abstract: The phase dependence and independence of the response of a trichromatically driven two-level medium to an arbitrarily intense probe field have been studied. The sum of the relative phases of the sideband components of the trichromatic field compared to the central component plays a crucial role in the response of the medium. For a weak probe field, as the sum of the relative phases changes from $0$ to $\pi $, multiple switching can be achieved, in which switching from normal to anomalous dispersion occurs in multiple separate frequency regimes. The remarkable dependence on the sum phase is also shown for a strong probe field. On the other hand, when the sum of the two relative phases is fixed, the changes in the respective phases have no influence on the response of the medium.

Key words: absorption and dispersion, phase dependence and independence, multiple switching from normal to anomalous dispersion

中图分类号:  (Effects of atomic coherence on propagation, absorption, and Amplification of light; electromagnetically induced transparency and Absorption)

  • 42.50.Gy
42.50.Ct (Quantum description of interaction of light and matter; related experiments)