Bistable Helmholtz dark spatial optical solitons in materials with self-defocusing saturable nonlinearity

Christian, JM and Lundie, MJ 2017, 'Bistable Helmholtz dark spatial optical solitons in materials with self-defocusing saturable nonlinearity' , Journal of Nonlinear Optical Physics & Materials, 26 (02) .

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Abstract

We present, to the best of our knowledge, the first exact dark spatial solitons of a nonlinear Helmholtz equation with a self-defocusing saturable refractive-index model. These solutions capture oblique (arbitrary-angle) propagation in both the forward and backward directions, and they can also exhibit a bistability characteristic. A detailed derivation is presented, obtained by combining coordinate transformations and direct-integration methods, and the corresponding solutions of paraxial theory are recovered asymptotically as a subset. Simulations examine the robustness of the new Helmholtz solitons, with stationary states emerging from a range of perturbed input beams.

Item Type: Article
Schools: Schools > School of Computing, Science and Engineering > Salford Innovation Research Centre (SIRC)
Journal or Publication Title: Journal of Nonlinear Optical Physics & Materials
Publisher: World Scientific
ISSN: 0218-8635
Related URLs:
Funders: Engineering and Physical Sciences Research Council (EPSRC)
Depositing User: JM Christian
Date Deposited: 17 Aug 2017 07:31
Last Modified: 17 Aug 2017 14:09
URI: http://usir.salford.ac.uk/id/eprint/43510

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