Necklacelike solitons in optically induced photonic lattices.
We report the first observation of stationary necklacelike solitons. Such necklace structures were realized when a high-order vortex beam was launched appropriately into a two-dimensional optically induced photonic lattice. Our theoretical results obtained with continuous and discrete models show that the necklace solitons resulting from a charge-4 vortex have a pi phase difference between adjacent "pearls" and are formed in an octagon shape. Their stability region is identified.
Yang
J
J
Department of Mathematics and Statistics, University of Vermont, Burlington, VT 05401, USA.
Makasyuk
I
I
Kevrekidis
P G
PG
Martin
H
H
Malomed
B A
BA
Frantzeskakis
D J
DJ
Chen
Zhigang
Z