title: Dynamics of elliptical beams in the anomalous group-velocity dispersion regime.
abstract: We investigate 3D spatio-temporal focusing of elliptically-shaped beams in a bulk medium with Kerr nonlinearity and anomalous group-velocity dispersion (GVD). Strong space-time localization of the mode is observed through multi-filamentation with temporal compression by a factor of 3. This behavior is in contrast to the near-zero GVD regime in which minimal pulse temporal compression is observed. Our theoretical simulations qualitatively reproduce the experimental results showing the highly localized spatio-temporal profile in the anomalous-GVD regime, which contrasts to the weakly localized pulse in the normal-GVD regime.
authors.affiliation: School of Applied and Engineering Physics, Cornell University, Ithaca, NY 14853, USA. bgs43@cornell.edu
authors.forename: Bonggu
authors.initials: B
authors.lastname: Shim
authors.forename: Samuel E
authors.initials: SE
authors.lastname: Schrauth
authors.forename: Luat T
authors.initials: LT
authors.lastname: Vuong
authors.forename: Yoshitomo
authors.initials: Y
authors.lastname: Okawachi
authors.forename: Alexander L
authors.initials: AL
authors.lastname: Gaeta