Dynamic instability of counterpropagating self-trapped beams in photorefractive media Conference Paper uri icon


  • 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.

name of conference

  • SPIE Proceedings

published proceedings


author list (cited authors)

  • Jander, P., Schroeder, J., Richter, T., Motzek, K., Kaiser, F., Belic, M. R., & Denz, C.

citation count

  • 1

complete list of authors

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

editor list (cited editors)

  • Rosanov, N., & Trillo, S.

publication date

  • May 2006