title: Spatial fidelity of image amplification in photorefractive crystals.
abstract: We numerically studied the spatial fidelity of coherent image amplification by two-wave mixing configurations in photorefractive BaTiO(3):Ce using a three-dimensional analysis. The results are given for the case when the input one-dimensional rectangular amplitude of the image-bearing extraordinary beam is finite in the plane of incidence and when the amplitude is finite in the orthogonal plane. The fidelity and the gain versus the angle between the propagating direction of the image-bearing beam and the crystal c axis, the pump-to-image intensity ratio, and the input beamwidth, are analyzed.
authors.forename: P
authors.initials: P
authors.lastname: Xie
authors.forename: J H
authors.initials: JH
authors.lastname: Dai
authors.forename: P Y
authors.initials: PY
authors.lastname: Wang
authors.forename: H J
authors.initials: HJ
authors.lastname: Zhang