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Achieving high-efficiency second harmonic generation in a sequence of laser pulses with random peak intensity. Part II. Suppression of intensity fluctuations in a quadratic-nonlinearity medium

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The study examines suppression of peak intensity fluctuations in a sequence of fixed-energy femtosecond pulses by so-called cascade second harmonic generation (SHG). In Part II we analyze the propagation of a sequence of subpulses in an optical fiber without self-interaction characterized by cubic nonlinearity and large wavenumber detuning between the principal mode and the second harmonic. The propagation regimes discovered for a sequence of femtosecond pulses ensure suppression of peak intensity fluctuations. The mean peak intensity can be simultaneously increased by chirping the pulses in a particular section and also by adjusting the wavenumber detuning and increasing the quadratic nonlinearity while at the same time reducing to zero the phase of the distribution when the pulses pass to a new part of the nonlinear system.

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Authors and Affiliations

  1. Faculty of Computational Mathematics and Cybernetics, Moscow State University, Moscow, Russia

    T. M. Lysak & V. A. Trofimov

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  1. T. M. Lysak
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  2. V. A. Trofimov
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Correspondence to T. M. Lysak.

Additional information

For Part I, See Prikladnaya Matematika i Informatika, No. 27, pp. 5–24, 2007; English Translation: Computational Mathematics and Modeling, Vol. 19, No. 4, pp. 333–342, 2008.

Translated from Prikladnaya Matematika i Informatika, No. 28, pp. 5–36, 2008.

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Lysak, T.M., Trofimov, V.A. Achieving high-efficiency second harmonic generation in a sequence of laser pulses with random peak intensity. Part II. Suppression of intensity fluctuations in a quadratic-nonlinearity medium. Comput Math Model 20, 1–25 (2009). https://doi.org/10.1007/s10598-009-9015-4

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  • DOI: https://doi.org/10.1007/s10598-009-9015-4

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