Abstract
An observation and the theory of a nonlinear response in the ensemble of nonlinear classical oscillators excited by two field pulses — similar to the phenomenon of a photon echo in optics — are reported. It has been shown that an echo arises in any ensemble with an inhomogeneously broadened line regardless of the type of interaction with a field (classical or quantum). New peculiarities appear during the determinate distribution of frequencies in the ensemble. On the one hand, an echo pulse is observed with a relatively small (about 100) number of oscillatorsN, on the other, new pulses spaced at a distance that is proportional toN arise in the nonlinear response.
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Chebotayev, V.P., Dubetsky, B.Y. A classical model of the photon echo. Appl. Phys. B 31, 45–52 (1983). https://doi.org/10.1007/BF00693905
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DOI: https://doi.org/10.1007/BF00693905