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Orientation-dependent excitations of lattice soliton trains with hybrid nonlinearity

Yi Hu, Cibo Lou, Sheng Liu, Peng Zhang, Jianlin Zhao, Jingjun Xu, and Zhigang Chen

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Abstract

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.

© 2009 Optical Society of America

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