Comparison of the dynamics of population difference gratings created in a two-level and three-level medium by half-cycle light pulses
Arkhipov R.M.1,2, Arkhipov M.V.1,2, Rosanov N.N.1,2
1St. Petersburg State University, St. Petersburg, Russia
2Ioffe Institute, St. Petersburg, Russia
Email: arkhipovrostisav@gmail.com, mikhail.v.arkhipov@gmail.com, nnrosanov@mail.ru

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Based on the numerical solution of the system of Maxwell-Bloch equations, a comparison is made of the dynamics of the population difference gratings and the polarization of the medium, modeled in the two- and three-level approximation. It is shown that gratings also appear in a three-level medium, but their dynamics are not qualitatively different from a two-level medium with the selected model parameters. Keywords: population difference gratings, half-cycle pulses, attosecond pulses, coherent effects, two-level medium.
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