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Phys Rev Lett. 2006 May 19;96(19):193901. Epub 2006 May 16.

Conical emission, pulse splitting, and X-wave parametric amplification in nonlinear dynamics of ultrashort light pulses.

Author information

  • 1CNR-INFM, Department of Physics and Mathematics, University of Insubria, Como, Italy. daniele.faccio@unisubria.it

Abstract

The precise observation of the angle-frequency spectrum of light filaments in water reveals a scenario incompatible with current models of conical emission (CE). Its description in terms of linear X-wave modes leads us to understand filamentation dynamics requiring a phase- and group-matched, Kerr-driven four-wave-mixing process that involves two highly localized pumps and two X waves. CE and temporal splitting arise naturally as two manifestations of this process.

PMID:
16803102
DOI:
10.1103/PhysRevLett.96.193901
[PubMed]
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