Supercontinuum and third-harmonic generation accompanying optical filamentation as firstorder scattering processes

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It is demonstrated numerically that the supercontinuum generation and third-harmonic generation that accompany optical filamentation in nonlinear dispersive bulk media can be described as first-order scattering processes akin to the first Born approximation. In particular, for an incident ultrashort pulse the angularly resolved spectrum of the transmitted pulse is shown to be accurately determined using first-order scattering of the incident field from the nonlinearly modified refractive index due to the optical filament. Thus, although an optical filament is a highly nonlinear object, the accompanying supercontinuum generation and third-harmonic generation are driven parametrically by the filament and have negligible back action upon it.

Original languageEnglish (US)
Pages (from-to)2816-2818
Number of pages3
JournalOptics letters
Issue number19
StatePublished - Oct 1 2007


ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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