Feedback controlled periodic states for different kinds of photorefractive nonlinear response
International Institute for Nonlinear Studies, Koptyug Ave.
1, 630090 Novosibirsk, Russia
2 Department of Physics, University of Osnabrück, 49069 Osnabrück, Germany
Corresponding author: a email@example.com
Revised: 29 October 2002
Published online: 4 March 2003
We investigate analytically and numerically the influence of the type of the photorefractive nonlinear response on the periodic states (attractors) which occur during feedback controlled 2W-coupling and correspond to almost diffraction efficiency of the dynamic index grating. In addition to the case of the local response typical, for example, for LiNbO3 crystals we consider the cases of nonlocal (diffusive) response (BaTiO3, SBN) and resonant response (DC-biased BSO, BTO, and BGO crystals). It is shown that the conditions for the transition to the periodic states and their apparent characteristics are strongly different for the two limiting cases above.
PACS: 42.65.Hw – Phase conjugation; photorefractive and Kerr effects / 42.40.Pa – Volume holograms / 42.65.Sf – Dynamics of nonlinear optical systems; optical instabilities, optical chaos and complexity, and optical spatio-temporal dynamics
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2003