ABSORPTION-FREE SUPERLUMINAL LIGHT PROPAGATION IN A V-TYPE SYSTEM
S. W. Rabiei, Kh. Saaidi, B. Ruzbahani +1 more
Physics Department, Zanjan University, P. O. Box 45195-313, Zanjan, Iran(Dated: May 20, 2010)Dispersion and absorption properties of a weak probe field in a three-level V-type atomic systemis studied. By application of indirect incoherent pump fields the effect of populating upper levels onoptical 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 theintensity of the coherent or indirect incoherent pump fields. It is demonstrated that the absorption-free superluminal and subluminal light propagation appear in this system.
•Jan 18, 2010•1 citation