title: Specific recording kinetics as a general property of unconventional photorefractive media.
abstract: We introduce a model for the kinetics of grating formation during holographic recording in optically excitable two-state systems. An unexpected characteristic time dependence of the diffraction efficiency is found. We show that it originates from a nonlinear transformation of the light interference pattern into a refractive-index profile. Our findings strongly resemble and explain by nature the experimental data of two-state systems in general, here represented by two examples: sodium nitroprusside and terbium gallium garnet.
authors.affiliation: Fachbereich Physik, Universität Osnabrück, Barbarastrasse 7, D-49069 Osnabrück, Germany and Institut für Experimentalphysik, Universität Wien, Boltzmanngasse 5, A-1090 Wien, Austria. Martin.Fally@univie.ac.at
authors.forename: Martin
authors.initials: M
authors.lastname: Fally
authors.forename: Mirco
authors.initials: M
authors.lastname: Imlau
authors.forename: Romano A
authors.initials: RA
authors.lastname: Rupp
authors.forename: Mostafa A
authors.initials: MA
authors.lastname: Ellabban
authors.forename: Theo
authors.initials: T
authors.lastname: Woike