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The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs.

Strathprints serves world leading Open Access research by the University of Strathclyde, including research by the Strathclyde Institute of Pharmacy and Biomedical Sciences (SIPBS), where research centres such as the Industrial Biotechnology Innovation Centre (IBioIC), the Cancer Research UK Formulation Unit, SeaBioTech and the Centre for Biophotonics are based.

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Instabilities of higher-order parametric solitons: Filamentation versus coalescence

Skryabin, Dmitry V. and Firth, William J. (1998) Instabilities of higher-order parametric solitons: Filamentation versus coalescence. Physical Review E: Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics, 58 (2). R1252 -R1255. ISSN 1063-651X

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Abstract

We investigate stability and dynamics of higher-order solitary waves in quadratic media, which have a central peak and one or more surrounding rings. We show the existence of two qualitatively different behaviors. For positive phase mismatch the rings break up into filaments that move radially to the initial ring. For sufficient negative mismatches rings are found to coalesce with the central peak, forming a single oscillating filament.