Parametric localized modes in quadratic nonlinear photonic structures
摘要
We analyze two-color spatially localized modes formed by parametrically coupled fundamental and second-harmonic fields excited at quadratic (or chi-2) nonlinear interfaces embedded into a linear layered structure --- a quasi-one-dimensional quadratic nonlinear photonic crystal. For a periodic lattice of nonlinear interfaces, we derive an effective discrete model for the amplitudes of the fundamental and second-harmonic waves at the interfaces (the so-called discrete chi-2 equations), and find, numerically and analytically, the spatially localized solutions --- discrete gap solitons. For a single nonlinear interface in a linear superlattice, we study the properties of two-color localized modes, and describe both similarities and differences with quadratic solitons in homogeneous media.
引用
@article{arxiv.nlin/0005028,
title = {Parametric localized modes in quadratic nonlinear photonic structures},
author = {Andrey A. Sukhorukov and Yuri S. Kivshar and Ole Bang and Costas M. Soukoulis},
journal= {arXiv preprint arXiv:nlin/0005028},
year = {2007}
}
备注
9 pages, 8 figures