TY - JOUR
T1 - Stable higher-charge discrete vortices in hexagonal optical lattices
AU - Law, Kody J.H.
AU - Kevrekidis, P. G.
AU - Alexander, Tristram J.
AU - Królikowski, Wieslaw
AU - Kivshar, Yuri S.
PY - 2009/2/2
Y1 - 2009/2/2
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=60349120093&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.79.025801
DO - 10.1103/PhysRevA.79.025801
M3 - Article
SN - 1050-2947
VL - 79
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 2
M1 - 025801
ER -