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: | 02 Jul 2018 11:29 |
| URI: | http://usir.salford.ac.uk/id/eprint/43510 |
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