Dynamic instability of counterpropagating self-trapped beams in photorefractive media

Philip Jander; Jochen Schröder; Tobias Richter; Kristian Motzek; Friedemann Kaiser; Milivoj R. Belic; Cornelia Denz

doi:10.1117/12.676737

11 May 2006 Dynamic instability of counterpropagating self-trapped beams in photorefractive media

Philip Jander, Jochen Schröder, Tobias Richter, Kristian Motzek, Friedemann Kaiser, Milivoj R. Belic, Cornelia Denz

Proceedings Volume 6255, ICONO 2005: Nonlinear Space-Time Dynamics; 62550A (2006) https://doi.org/10.1117/12.676737
Event: ICONO 2005, 2005, St. Petersburg, Russian Federation

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.

Citation Download Citation

Philip Jander, Jochen Schröder, Tobias Richter, Kristian Motzek, Friedemann Kaiser, Milivoj R. Belic, and Cornelia Denz "Dynamic instability of counterpropagating self-trapped beams in photorefractive media", Proc. SPIE 6255, ICONO 2005: Nonlinear Space-Time Dynamics, 62550A (11 May 2006); https://doi.org/10.1117/12.676737

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