TY - JOUR
T1 - Few-cycle laser-pulse collapse in Kerr media: The role of group-velocity dispersion and X-wave formation
AU - Faccio, Daniele
AU - Clerici, Matteo
AU - Averchi, Alessandro
AU - Lotti, Antonio
AU - Jedrkiewicz, Ottavia
AU - Dubietis, Audrius
AU - Tamosauskas, Gintaras
AU - Couairon, Arnaud
AU - Bragheri, Francesca
AU - Papazoglou, Dimitris
AU - Tzortzakis, Stelios
AU - Di Trapani, Paolo
PY - 2008/9
Y1 - 2008/9
N2 - We study ultrashort laser-pulse propagation and filamentation dynamics in dispersive Kerr media. We identify the regime for which the filamentation threshold (P-th) is considerably higher than the critical power (P-cr) 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 P-cr < P < P-th, self-focusing is arrested by group-velocity dispersion, and no filaments or X-waves are formed. At P >= P-th, we observe X-wave formation and a weak filamentation regime. At P >> P-th, we observe both X-waves and fully formed filaments.
AB - We study ultrashort laser-pulse propagation and filamentation dynamics in dispersive Kerr media. We identify the regime for which the filamentation threshold (P-th) is considerably higher than the critical power (P-cr) 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 P-cr < P < P-th, self-focusing is arrested by group-velocity dispersion, and no filaments or X-waves are formed. At P >= P-th, we observe X-wave formation and a weak filamentation regime. At P >> P-th, we observe both X-waves and fully formed filaments.
U2 - 10.1103/PhysRevA.78.033826
DO - 10.1103/PhysRevA.78.033826
M3 - Article
SN - 1050-2947
VL - 78
SP - -
JO - Physical Review A
JF - Physical Review A
IS - 3
M1 - 033826
ER -