title: Kinetics of photorefractive recording for circular light beams.
abstract: We show, theoretically and experimentally, that the buildup of the space-charge field in photorefractive crystals is far from monoexponential for circular light beams. This is a general property of the two-dimensional (2D) case, in contrast to the one-dimensional case. The results form a basis for determination of the photoelectric parameters of photorefractive crystals within a wide intensity range, which is important, e.g., for solving of the optical-damage problem in LiNbO3 and LiTaO3 crystals.
authors.affiliation: Institute of Physics, University of Bonn, Bonn, Germany.
authors.forename: M
authors.initials: M
authors.lastname: Kösters
authors.forename: B
authors.initials: B
authors.lastname: Sturman
authors.forename: D
authors.initials: D
authors.lastname: Haertle
authors.forename: K
authors.initials: K
authors.lastname: Buse