This article is cited in 1 paper

Extremely strong fields and ultrashort optical pulses

Superradiance of a stopped polarization pulse in a thin layer of a five-level medium excited by subcycle attosecond pulses

R. M. Arkhipov^ab, A. V. Pakhomov^a, M. V. Arkhipov^a, N. N. Rosanov<sup>ab

a</sup> Saint Petersburg State University, 199034 St. Petersburg, Russia
^b Ioffe Institute, 194021 St. Petersburg, Russia

Abstract: Using the numerical solution of the system of equations for the amplitudes of bound states, together with the wave equation, we theoretically consider stopped polarization pulse superradiance upon excitation by a pair of half-period attosecond pulses in a thin layer of a five-level resonant medium, the parameters of which are the same as in a hydrogen atom. It is shown that in the case of a multilevel medium, at certain parameters of the exciting field, the superradiance pulse near the medium is also a single-cycle pulse, the shape of which is determined by the first time derivative of the stopped polarization pulse, as in the case when approximate low-level and classical models were used to describe the response of the medium.

Keywords: superradiance, attosecond pulses, stopped polarization pulse, unipolar pulses, subcycle pulses.

Received: 27.11.2022
Revised: 27.11.2022
Accepted: 12.12.2022

DOI: 10.21883/OS.2023.01.54541.4375-22

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