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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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Two-dimensional front dynamics and spatial solitons in a nonlinear optical system

Ackemann, T. and Pesch, M. and Lange, W. and Gomila, D. and Firth, W.J. and Oppo, G.L. (2007) Two-dimensional front dynamics and spatial solitons in a nonlinear optical system. Physical Review Letters, 99. ISSN 0031-9007

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Abstract

Two-dimensional fronts and coarsening dynamics with a t1/2 power law are analyzed experimentally and theoretically in a nonlinear optical system of a sodium vapor cell with single-mirror feedback. Modifications of the t1/2 power law are observed in the vicinity of a modulational instability leading to the formation of spatial solitons of different sizes. The experimental and numerical observations give direct evidence for the locking of fronts as the mechanism of soliton formation. A phenomenological equation for the dynamics of the domain radius explains the observed behavior.