Few-cycle laser-pulse collapse in Kerr media: The role of group-velocity dispersion and X -wave formation

Daniele Faccio, Matteo Clerici, Alessandro Averchi, Antonio Lotti, Ottavia Jedrkiewicz, Audrius Dubietis, Gintaras Tamosauskas, Arnaud Couairon, Francesca Bragheri, Dimitris Papazoglou, Stylianos Tzortzakis, Paolo Di Trapani

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Abstract

We study ultrashort laser-pulse propagation and filamentation dynamics in dispersive Kerr media. We identify the regime for which the filamentation threshold (Pth) is considerably higher than the critical power (Pcr) for monochromatic beam collapse in pure Kerr media. In particular, we compare the threshold for the formation of filaments with that for the formation of X -waves. At powers Pcr <P< Pth, self-focusing is arrested by group-velocity dispersion, and no filaments or X -waves are formed. At P≥ Pth, we observe X -wave formation and a weak filamentation regime. At (P) Pth, we observe both X -waves and fully formed filaments.

Original languageEnglish
Article number033826
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume78
Issue number3
DOIs
Publication statusPublished - 18 Sep 2008
Externally publishedYes

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ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Faccio, D., Clerici, M., Averchi, A., Lotti, A., Jedrkiewicz, O., Dubietis, A., Tamosauskas, G., Couairon, A., Bragheri, F., Papazoglou, D., Tzortzakis, S., & Di Trapani, P. (2008). Few-cycle laser-pulse collapse in Kerr media: The role of group-velocity dispersion and X -wave formation. Physical Review A - Atomic, Molecular, and Optical Physics, 78(3), [033826]. https://doi.org/10.1103/PhysRevA.78.033826