Title
Self-trapping of optical vortices at the surface of an induced semi-infinite photonic lattice
Publication Date
2010
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.
Pages
5873-5878
Volume
18
Issue
6
Journal Title
OPTICS EXPRESS
Comments
The published version is located at http://www.opticsinfobase.org/oe/abstract.cfm?uri=oe-18-6-5873