Orientation-dependent excitations of lattice soliton trains with hybrid nonlinearity.
We demonstrate selective excitation of soliton trains residing in different gaps or within the same Bloch band of a new type of photonic lattice merely by changing the orientation of an input probe beam. A self-focusing and -defocusing hybrid nonlinearity as established in a nonconventionally biased photorefractive crystal leads to controlled soliton transitions from different band edges or subband edges, in good agreement with our theoretical analysis.
Hu
Yi
Y
The Key Laboratory of Weak-Light Nonlinear Photonics, Ministry of Education and TEDA Applied Physics School, Nankai University, Tianjin, China.
Lou
Cibo
C
Liu
Sheng
S
Zhang
Peng
P
Zhao
Jianlin
J
Xu
Jingjun
J
Chen
Zhigang
Z