On the third harmonic generation in a medium with negative pump wave refraction

S. O. Elyutin, A. I. Maimistov, I. R. Gabitov

Research output: Contribution to journalArticle

30 Scopus citations

Abstract

The propagation of the pump and its third harmonic pulses in a cubically nonlinear medium is considered theoretically, provided that the linear properties of the medium are characterized by a negative refractive index at the pump frequency and a positive refractive index at the harmonic frequency. For low-intensity interacting waves, the pump and third harmonic pulses propagate in opposite directions, but sufficiently intense pulses can produce a simulton-a solitary two-frequency wave that propagates in a certain direction as a single whole. The system of equations is investigated numerically for a model that, apart from the harmonic generation, includes the second-order group velocity dispersion and the nonlinear self- and cross-phase modulations of the interacting waves. The separation of the pump and harmonic pulses due to the difference in the directions of their group velocities and peculiarities of the Manley-Rowe relation for parametric processes in metamedia are discussed.

Original languageEnglish (US)
Pages (from-to)157-169
Number of pages13
JournalJournal of Experimental and Theoretical Physics
Volume111
Issue number1
DOIs
StatePublished - Jul 1 2010
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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