Discrete quadratic solitons with competing second-harmonic components
Date
2011
Authors
Setzpfandt, Frank
Pertsch, Thomas
Sukhorukov, Andrey
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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.
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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
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Source
Physical Review A: Atomic, Molecular and Optical Physics
Type
Journal article
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Open Access
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