Extreme events in complex linear and nonlinear photonic media

Mattheakis, M., Pitsios, Ioannis, Tsironis, G.P. and Tzortzakis, S. 2016. Extreme events in complex linear and nonlinear photonic media. Chaos, Solitons and Fractals 84 , pp. 73-80. 10.1016/j.chaos.2016.01.008

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Abstract

Ocean rogue waves (RW) are huge solitary waves that have for long triggered the interest of scientists. The RWs emerge in a complex environment and it is still under investigation if they are due to linear or nonlinear processes. Recent works have demonstrated that RWs appear in various other physical systems such as microwaves, nonlinear crystals, cold atoms, etc. In this work we investigate optical wave propagation in strongly scattering random lattices embedded in the bulk of transparent glasses. In the linear regime we observe the appearance of extreme waves, RW-type, that depend solely on the scattering properties of the medium. Interestingly, the addition of nonlinearity does not modify the RW statistics, while as the nonlinearities are increased multiple-filamentation and intensity clamping destroy the RW statistics. Numerical simulations agree nicely with the experimental findings and altogether prove that optical rogue waves are generated through the linear strong scattering in such complex environments.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Publisher:	Elsevier
ISSN:	0960-0779
Date of Acceptance:	12 January 2016
Last Modified:	23 Jan 2020 04:20
URI:	https://orca.cardiff.ac.uk/id/eprint/110537

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