Surface solitons in two-dimensional quadratic photonic lattices

TL;DR

This paper investigates two-color surface solitons in 2D quadratic photonic lattices, revealing their existence at edges and corners, and analyzing how phase mismatch affects their stability and power thresholds.

Contribution

It introduces the existence and properties of parametrically coupled surface solitons in 2D quadratic lattices, including stability and phase mismatch effects.

Findings

Surface solitons can exist at edges and corners of 2D photonic lattices.

Phase mismatch influences soliton stability and threshold power.

Parametrically coupled modes are viable in 2D quadratic lattices.

Abstract

We study two-color surface solitons in two-dimensional photonic lattices with quadratic nonlinear response. We demonstrate that such parametrically coupled optical localized modes can exist in the corners or at the edges of a square photonic lattice, and we analyze the impact of the phase mismatch on their properties, stability, and the threshold power for their generation.