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Proceedings Paper

Dynamic instability of counterpropagating self-trapped beams in photorefractive media
Author(s): Philip Jander; Jochen Schröder; Tobias Richter; Kristian Motzek; Friedemann Kaiser; Milivoj R. Belic; Cornelia Denz
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Paper Abstract

We present an experimental and numerical investigation of the interaction of bidirectional self-guided beams in photorefractive media. Distinct from copropagating beams, the feedback intrinsic to the counterpropagating geometry renders such configurations unstable beyond a control parameter threshold. The instability is mediated through attractive interaction between the induced waveguides and leads to dynamic states, showing telltale signs of chaotic behaviour. We demonstrate qualitative correspondance between experiment and a saturable Kerr model, investigate the dynamical bifurcation in detail and expand on the consequences of a realistic photorefractive model including nonlocality, anisotropy and self bending.

Paper Details

Date Published: 11 May 2006
PDF: 8 pages
Proc. SPIE 6255, ICONO 2005: Nonlinear Space-Time Dynamics, 62550A (11 May 2006); doi: 10.1117/12.676737
Show Author Affiliations
Philip Jander, Westfälische Wilhelms-Univ. (Germany)
Jochen Schröder, Westfälische Wilhelms-Univ. (Germany)
Tobias Richter, Technische Univ. Darmstadt (Germany)
Kristian Motzek, Technische Univ. Darmstadt (Germany)
Friedemann Kaiser, Technische Univ. Darmstadt (Germany)
Milivoj R. Belic, Texas A&M Univ. at Qatar (Qatar)
Cornelia Denz, Westfälische Wilhelms-Univ. (Germany)


Published in SPIE Proceedings Vol. 6255:
ICONO 2005: Nonlinear Space-Time Dynamics
Nikolai Rosanov; Stephano Trillo, Editor(s)

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