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

Faccio, D. et al. (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), (doi: 10.1103/PhysRevA.78.033826)

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 PcrPPth, self-focusing is arrested by group-velocity dispersion, and no filaments or X-waves are formed. At PPth, we observe X-wave formation and a weak filamentation regime. At PPth, we observe both X-waves and fully formed filaments. DO

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Clerici, Professor Matteo and Faccio, Professor Daniele
• Authors: Faccio, D., Clerici, M., Averchi, A., Lotti, A., Jedrkiewicz, O., Dubietis, A., Tamosauskas, G., Couairon, A., Bragheri, F., Papazoglou, D., Tzortzakis, S., and Di Trapani, P.
• College/School: College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering; College of Science and Engineering > School of Physics and Astronomy
• Journal Name: Physical Review A: Atomic, Molecular and Optical Physics
• Publisher: American Physical Society
• ISSN: 1050-2947
• ISSN (Online): 1094-1622