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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 6 — Mar. 15, 2010
  • pp: 5873–5878

Self-trapping of optical vortices at the surface of an induced semi-infinite photonic lattice

Daohong Song, Cibo Lou, Kody J.H. Law, Liqin Tang, Zhuoyi Ye, P.G. Kevrekidis, Jingjun Xu, and Zhigang Chen  »View Author Affiliations


Optics Express, Vol. 18, Issue 6, pp. 5873-5878 (2010)
http://dx.doi.org/10.1364/OE.18.005873


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Abstract

We demonstrate self-trapping of singly-charged vortices at the surface of an optically induced two-dimensional photonic lattice. Under appropriate conditions of self-focusing nonlinearity, a singly-charged vortex beam can self-trap into a stable semi-infinite gap surface vortex soliton through a four-site excitation. However, a single-site excitation leads to a quasi-localized state in the first photonic gap, and our theoretical analysis illustrates that such a bandgap surface vortex soliton is always unstable. Our experimental results of stable and unstable topological surface solitons are corroborated by direct numerical simulations and linear stability analysis.

© 2010 OSA

OCIS Codes
(190.4350) Nonlinear optics : Nonlinear optics at surfaces
(190.4420) Nonlinear optics : Nonlinear optics, transverse effects in
(190.5530) Nonlinear optics : Pulse propagation and temporal solitons
(050.4865) Diffraction and gratings : Optical vortices

ToC Category:
Nonlinear Optics

History
Original Manuscript: January 27, 2010
Revised Manuscript: February 24, 2010
Manuscript Accepted: February 24, 2010
Published: March 9, 2010

Citation
Daohong Song, Cibo Lou, Kody J. H. Law, Liqin Tang, Zhuoyi Ye, P.G. Kevrekidis, Jingjun Xu, and Zhigang Chen, "Self-trapping of optical vortices at the surface of an induced semi-infinite photonic lattice," Opt. Express 18, 5873-5878 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-6-5873


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