Slow Light amplification in a non-inverted gain medium
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We investigate the propagation of a coherent probe light pulse through a three-level atomic medium (in the $Λ$--configuration) in the presence of a pump laser under the conditions for gain without inversion. When the carrier frequency of the probe pulse and the pump laser are in a Raman configuration, we show that it is possible to amplify a slow propagating pulse. We also analyze the regime in which the probe pulse is slightly detuned from resonance where we observe anomalous light propagation.
7 pages, 10 figures. To be published in Europhysics Letters
7 pages, 10 figures. To be published in Europhysics Letters