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Armenian Journal of Physics=Ֆիզիկայի հայկական հանդես
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Title:
ABSORPTION-FREE SUPERLUMINAL LIGHT PROPAGATION IN A V-TYPE SYSTEM
Creator:
S. W. Rabiei ; Kh. Saaidi ; B. Ruzbahani ; M. Mahmoudi
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Abstract:
Dispersion and absorption properties of a weak probe field in a three-level V-type atomic system is studied. By application of indirect incoherent pump fields the effect of populating upper levels on optical properties of the atomic medium in presence of a strong coherent pump field is investigated. It is shown that the slope of dispersion switches from positive to negative just by changing the intensity of the coherent or indirect incoherent pump fields. It is demonstrated that the absorption-free superluminal and subluminal light propagation appear in this system.