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

Authors

DH Song
CB Lou
KJH Law
LQ Tang
ZY Ye
PG Kevrekidis, University of Massachusetts - AmherstFollow
JJ Xu
ZG Chen

Publication Date

2010

Journal or Book Title

OPTICS EXPRESS

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.

Comments

The published version is located at http://www.opticsinfobase.org/oe/abstract.cfm?uri=oe-18-6-5873

Pages

5873-5878

Volume

18

Issue

6

Recommended Citation

Song, DH; Lou, CB; Law, KJH; Tang, LQ; Ye, ZY; Kevrekidis, PG; Xu, JJ; and Chen, ZG, "Self-trapping of optical vortices at the surface of an induced semi-infinite photonic lattice" (2010). OPTICS EXPRESS. 30.
Retrieved from https://scholarworks.umass.edu/math_faculty_pubs/30