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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 27 — Dec. 19, 2011
  • pp: 26232–26238

Vortex solitons at the boundaries of photonic lattices

Dragana Jović, Cornelia Denz, and Milivoj Belić  »View Author Affiliations


Optics Express, Vol. 19, Issue 27, pp. 26232-26238 (2011)
http://dx.doi.org/10.1364/OE.19.026232


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Abstract

Using numerical analysis we demonstrate the existence of vortex solitons at the edge and in the corners of two-dimensional triangular photonic lattice. We develop a concise picture of their behavior in both single-propagating and counterpropagating beam geometries. In the single-beam geometry, we observe stable surface vortex solitons for long propagation distances only in the form of discrete six-lobe solutions at the edge of the photonic lattice. Other observed solutions, in the form of ring vortex and discrete solitons with two or three lobes, oscillate during propagation in a way indicating the exchange of power between neighboring lobes. For higher beam powers we observe dynamical instabilities of surface vortex solitons and study orbital angular momentum transfer of such vortex states. In the two-beam counterpropagating geometry, all kinds of vortex solutions are stable for propagation distances of the order of typical experimental crystal lengths.

© 2011 OSA

OCIS Codes
(190.4350) Nonlinear optics : Nonlinear optics at surfaces
(190.5330) Nonlinear optics : Photorefractive optics

ToC Category:
Nonlinear Optics

History
Original Manuscript: September 2, 2011
Revised Manuscript: October 25, 2011
Manuscript Accepted: November 20, 2011
Published: December 8, 2011

Citation
Dragana Jović, Cornelia Denz, and Milivoj Belić, "Vortex solitons at the boundaries of photonic lattices," Opt. Express 19, 26232-26238 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-27-26232


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