Spatiotemporal dynamics of counterpropagating Airy beams.

Abstract:

:We analyse theoretically the spatiotemporal dynamics of two incoherent counterpropagating Airy beams interacting in a photorefractive crystal under focusing conditions. For a large enough nonlinearity strength the interaction between the two Airy beams leads to light-induced waveguiding. The stability of the waveguide is determined by the crystal length, the nonlinearity strength and the beam's intensities and is improved when comparing to the situation using Gaussian beams. We further identify the threshold above which the waveguide is no longer static but evolves dynamically either time-periodically or even chaotically. Above the stability threshold, each Airy-soliton moves erratically between privileged output positions that correspond to the spatial positions of the lobes of the counterpropagating Airy beam. These results suggest new ways of creating dynamically varying waveguides, optical logic gates and chaos-based computing.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Wiersma N,Marsal N,Sciamanna M,Wolfersberger D

doi

10.1038/srep13463

subject

Has Abstract

pub_date

2015-08-28 00:00:00

pages

13463

issn

2045-2322

pii

srep13463

journal_volume

5

pub_type

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