Abstract
Abilities of the method of accumulation of coherent unstable response of a medium for amplification of the rotated component of the probe wave’s polarization in the atomic medium of three-level atoms are studied. Probe wave is examined in frames of the perturbation theory and its frequency is considered near to one photon resonance from the ground to the first excited level. The intense monochromatic pump field connects two excited energy levels and propagates through the medium without a change. The broadening of spectral lines caused by the relaxation processes and the Doppler broadening are included into the calculations. It is shown that by multiple consistent instantaneous change of input probe field’s phase from 0 to π and back, it is possible to obtain, in the tail part of the rotated component of the probe field, a separate narrowed light pulse along with the increase in intensity by more than an order of magnitude with respect to the input field.
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Original Russian Text © M.H. Hovhannisyan, 2014, published in Izvestiya NAN Armenii, Fizika, 2014, Vol. 49, No. 3, pp. 168–176.
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Hovhannisyan, M.H. Ultrashort pulse generation in the medium with induced optical anisotropy. J. Contemp. Phys. 49, 103–109 (2014). https://doi.org/10.3103/S1068337214030049
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DOI: https://doi.org/10.3103/S1068337214030049