Title

Experiments on Gaussian beams and vortices in optically induced photonic lattices

Authors

Authors

Z. G. Chen; H. Martin; A. Bezryadina; D. Neshev; Y. S. Kivshar;D. N. Christodoulides

Comments

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Abbreviated Journal Title

J. Opt. Soc. Am. B-Opt. Phys.

Keywords

SPATIALLY INCOHERENT-LIGHT; WAVE-GUIDE ARRAYS; DISCRETE SOLITONS; MODULATION INSTABILITY; PHOTOREFRACTIVE MEDIA; SCREENING SOLITONS; ANGULAR-MOMENTUM; PARTICLES; Optics

Abstract

We investigate experimentally the propagation of fundamental Gaussian beams and vortices in a two-dimensional photonic lattice optically induced with partially coherent light. We focus on soliton-lattice interactions and vortex-lattice interactions when the lattice is operated in a nonlinear regime. In this case a host of novel phenomena is demonstrated, including soliton-induced lattice dislocation-deformation, soliton hopping and slow-down, and creation of structures akin to optical polarons. In addition, we observe that the nonlinear interaction between a vortex beam and a solitonic lattice leads to lattice twisting due to a transfer of the angular momentum carried by the vortex beam to the lattice. Results demonstrating a clear transition from discrete diffraction to the formation of two-dimensional, discrete fundamental and vortex solitons in a linear lattice are also included. (c) 2005 Optical Society of America.

Journal Title

Journal of the Optical Society of America B-Optical Physics

Volume

22

Issue/Number

7

Publication Date

1-1-2005

Document Type

Article

Language

English

First Page

1395

Last Page

1405

WOS Identifier

WOS:000230355400009

ISSN

0740-3224

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