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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 18 — Sep. 4, 2006
  • pp: 8317–8327

Observation of topological transformations of optical vortices in two-dimensional photonic lattices

Anna Bezryadina, Dragomir N. Neshev, Anton S. Desyatnikov, Jack Young, Zhigang Chen, and Yuri S. Kivshar  »View Author Affiliations

Optics Express, Vol. 14, Issue 18, pp. 8317-8327 (2006)

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We study interaction of a discrete vortex with a supporting photonic lattice and analyze how the combined action of the lattice periodicity and the medium nonlinearity can modify the vortex structure. In particular, we describe theoretically and observe in experiment, for the first time to our knowledge, the nontrivial topological transformations of the discrete vortex including the flipping of vortex charge and inversion of its orbital angular momentum. We also demonstrate the stabilizing effect of the interaction with the so-called “mixed” optically-induced photonic lattices on the vortex propagation and topological structure.

© 2006 Optical Society of America

OCIS Codes
(190.4420) Nonlinear optics : Nonlinear optics, transverse effects in
(190.5940) Nonlinear optics : Self-action effects

ToC Category:
Nonlinear Optics

Original Manuscript: May 26, 2006
Revised Manuscript: July 31, 2006
Manuscript Accepted: August 1, 2006
Published: September 1, 2006

Anna Bezryadina, Dragomir N. Neshev, Anton Desyatnikov, Jack Young, Zhigang Chen, and Yuri S. Kivshar, "Observation of topological transformations of optical vortices in two-dimensional photonic lattices," Opt. Express 14, 8317-8327 (2006)

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