Coherent amplification of pulses by a nonresonant two-level medium
Belenov E. M. , Kryukov P. G., Nazarkin A. V., Oraevskii A. N., Uskov A. V.
A solution of the Maxwell-Bloch equations, which describes the coherent propagation of a light pulse amplified by a two-level medium, is presented. All the energy stored in the medium is removed by the pulse, and the frequency of the pulse increases as it is amplified.