title: Influence of polarization state and absorption gratings on photorefractive two-wave mixing in GaAs.
abstract: The polarization dependence of two-wave mixing for two common crystal orientations is described and theoretical and experimental results given. The direction of energy exchange can be determined by the polarization of the two beams. Absorption gratings are proposed to explain fully the experimental results.
authors.forename: K
authors.initials: K
authors.lastname: Walsh
authors.forename: T J
authors.initials: TJ
authors.lastname: Hall
authors.forename: R E
authors.initials: RE
authors.lastname: Burge