Open AccessFinite-difference time-domain analysis of self-focusing in a nonlinear Kerr film
Author(s) -
Hyun Ho Lee,
Kyu Min Chae,
SangYoup Yim,
Seung Han Park
Publication year - 2004
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/opex.12.002603
Subject(s) - kerr effect , optics , nonlinear system , self focusing , finite difference time domain method , physics , magneto optic kerr effect , femtosecond , self phase modulation , beam (structure) , nonlinear optics , light beam , laser , electric field , materials science , laser beams , quantum mechanics
By using a finite-difference time-domain method, we analyze self-focusing effects in a nonlinear Kerr film and demonstrate that the near-field intensity distribution at the film surface can reach a stable state at only a few hundred femtoseconds after the incidence of the beam. Our simulations also show that the formation of multiple filamentations in the near-field is quite sensitive to the thickness of the nonlinear film and the power of the laser beam, strongly indicating the existence of nonlinear Fabry-Perot interference effects of the linearly polarized incident light.