Finite-difference time-domain analysis of self-focusing in a nonlinear Kerr film

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...

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Bibliographic Details
Published in:Optics express 2004-06, Vol.12 (12), p.2603-2609
Main Authors: Lee, Hyun-Ho, Chae, Kyu-Min, Yim, Sang-Youp, Park, Seung-Han
Format: Article
Language:English
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Summary: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.
ISSN:1094-4087
1094-4087
DOI:10.1364/OPEX.12.002603