Open AccessDynamics of elliptical beams in the anomalous group-velocity dispersion regime
Author(s) -
Bonggu Shim,
Samuel E. Schrauth,
Luat T. Vuong,
Yoshitomo Okawachi,
Alexander L. Gaeta
Publication year - 2011
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.19.009139
Subject(s) - filamentation , physics , optics , group velocity , self phase modulation , pulse compression , dispersion (optics) , pulse (music) , nonlinear optics , laser , telecommunications , radar , detector , computer science
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.