title: Structure analysis of two-dimensional nonlinear self-trapped photonic lattices in anisotropic photorefractive media.
abstract: We experimentally generate different types of two-dimensional self-trapped photonic lattices in a photorefractive medium and analyze the induced refractive index change using two different methods. One method gives the first experimental Fourier space analysis of both linear and nonlinear self-trapped photonic lattices with periodic phase modulation using partially spatially incoherent multiband excitation of the lattice modes. The other method utilizes the waveguiding properties of the lattice to achieve a real space analysis of the induced refractive index change. The results of both methods are compared.
authors.affiliation: Institut für Angewandte Physik, Westfälische Wilhelms-Universität, 48149 Münster, Germany.
authors.forename: Bernd
authors.initials: B
authors.lastname: Terhalle
authors.forename: Denis
authors.initials: D
authors.lastname: Träger
authors.forename: Liqin
authors.initials: L
authors.lastname: Tang
authors.forename: Jörg
authors.initials: J
authors.lastname: Imbrock
authors.forename: Cornelia
authors.initials: C
authors.lastname: Denz