## Experiments on Gaussian beams and vortices in optically induced photonic lattices

JOSA B, Vol. 22, Issue 7, pp. 1395-1405 (2005)

http://dx.doi.org/10.1364/JOSAB.22.001395

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### 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.

© 2005 Optical Society of America

**OCIS Codes**

(190.4420) Nonlinear optics : Nonlinear optics, transverse effects in

(190.5940) Nonlinear optics : Self-action effects

(270.5530) Quantum optics : Pulse propagation and temporal solitons

**Citation**

Zhigang Chen, Hector Martin, Anna Bezryadina, Dragomir Neshev, Yuri S. Kivshar, and Demetrios N. Christodoulides, "Experiments on Gaussian beams and vortices in optically induced photonic lattices," J. Opt. Soc. Am. B **22**, 1395-1405 (2005)

http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-22-7-1395

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