title: Degenerate parametric light scattering in periodically poled LiNbO3:Y:Fe.
abstract: The first observation of parametric light scattering patterns (rings, lines, and dots) in bulk periodically poled nonlinear media is reported. Development of the scattering patterns proves efficient photorefractive grating recording and considerable parametric gain for seed radiation in this new nonlinear material. Several novel phase-matched parametric processes, caused by the periodicity of the domain structure, are revealed.
authors.affiliation: Institute of Physics, National Academy of Sciences, 03650, Kiev-39, Ukraine.
authors.forename: M
authors.initials: M
authors.lastname: Goul'kov
authors.forename: S
authors.initials: S
authors.lastname: Odoulov
authors.forename: I
authors.initials: I
authors.lastname: Naumova
authors.forename: F
authors.initials: F
authors.lastname: Agulló-López
authors.forename: G
authors.initials: G
authors.lastname: Calvo
authors.forename: E
authors.initials: E
authors.lastname: Podivilov
authors.forename: B
authors.initials: B
authors.lastname: Sturman
authors.forename: V
authors.initials: V
authors.lastname: Pruneri