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Updated: Aug 7, 2026

10:17
20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
Published on: July 12, 2017
Conical emission, pulse splitting, and X-wave parametric amplification in nonlinear dynamics of ultrashort light
Daniele Faccio1, Miguel A Porras, Audrius Dubietis
1CNR-INFM, Department of Physics and Mathematics, University of Insubria, Como, Italy. daniele.faccio@unisubria.it
Physical Review Letters
|June 29, 2006
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.

