Physics – Optics
Scientific paper
2008-12-18
Physics
Optics
Scientific paper
10.1103/PhysRevA.79.025801
We show that double-charge discrete optical vortices may be completely stable
in hexagonal photonic lattices where single-charge vortices always exhibit
dynamical instabilities. Even when unstable the double-charge vortices
typically have a much weaker instability than the single-charge vortices, and
thus their breakup occurs at longer propagation distances.
Alexander Tristram J.
Kevrekidis Panagiotis G.
Kivshar Yuri S.
Krolikowski Wieslaw
Law Kody J. H.
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