Experiments on Gaussian beams and vortices in optically induced photonic lattices

    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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