Interface solitons excited between a simple lattice and a superlattice.
We demonstrate nonlinear surface states at the interface between optically-induced simple (periodic) and super (bi-periodic) photonic lattices. Depending on the excitation condition at the interface, we identify numerically and observe experimentally different types of interface solitons with characteristic phase structures under a self-focusing nonlinearity, including dipole-like "mixed-band" interface gap solitons.
Hu
Yi
Y
Department of Physics and Astronomy, San Francisco State University, San Francisco, CA 94132, USA.
Egger
Robert
R
Zhang
Peng
P
Wang
Xiaosheng
X
Chen
Zhigang
Z