Observation of second-band vortex solitons in 2D photonic lattices.
We demonstrate second-band bright vortex-array solitons in photonic lattices. This constitutes the first experimental observation of higher-band solitons in any 2D periodic system. These solitons possess complex intensity and phase structures, yet they can be excited by a simple highly localized vortex-ring beam. Finally, we show that the linear diffraction of such beams exhibits preferential transport along the lattice axes.
Bartal
Guy
G
Physics Department, Technion--Israel Institute of Technology, Haifa 32000, Israel.
Manela
Ofer
O
Cohen
Oren
O
Fleischer
Jason W
JW
Segev
Mordechai
M