Experiments on Gaussian beams and vortices in optically induced photonic lattices

Zhigang Chen*, Hector Martin, Anna Bezryadina, Dragomir Neshev, Yuri S. Kivshar, Demetrios N. Christodoulides

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    26 Citations (Scopus)

    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.

    Original languageEnglish
    Pages (from-to)1395-1405
    Number of pages11
    JournalJournal of the Optical Society of America B: Optical Physics
    Volume22
    Issue number7
    DOIs
    Publication statusPublished - Jul 2005

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