Observation of discrete solitons in lattices with second-order interaction.
We present what we believe to be the first experimental demonstration of discrete solitons under the influence of first- and second-order lattice site interaction in zigzag femtosecond laser-written waveguide arrays. We show how the formation of these entities is affected by different ratios of the interaction strength. Increasing the second-order coupling between the lattices sites yields an almost linear increase of the input power required for soliton formation.
Szameit
Alexander
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Department of Physics and Solid State Institute, Technion, Haifa 32000, Israel. alexander.szameit@uni-jena.de
Keil
Robert
R
Dreisow
Felix
F
Heinrich
Matthias
M
Pertsch
Thomas
T
Nolte
Stefan
S
Tünnermann
Andreas
A