Discrete quadratic solitons with competing second-harmonic components

Date

2011

Authors

Setzpfandt, Frank
Pertsch, Thomas
Sukhorukov, Andrey

Journal Title

Journal ISSN

Volume Title

Publisher

American Physical Society

Abstract

We describe families of discrete solitons in quadratic waveguide arrays supported by competing cascaded nonlinear interactions between one fundamental and two second-harmonic modes. We characterize the existence, stability, and excitation dynamics of these solitons and show that their features may resemble those of solitons in saturable media. Our results also demonstrate that a power threshold may appear for soliton formation, leading to a suppression of beam self-focusing which explains recent experimental observations.

Description

Keywords

Keywords: Discrete soliton; Excitation dynamics; Experimental observation; Nonlinear interactions; Power thresholds; Quadratic solitons; Second-harmonic; Self-focusing; Soliton formation; Waveguide array; Nonlinear optics; Solitons

Citation

Source

Physical Review A: Atomic, Molecular and Optical Physics

Type

Journal article

Book Title

Entity type

Access Statement

Open Access

License Rights

DOI

10.1103/PhysRevA.84.053843

Restricted until