Structure analysis of two-dimensional nonlinear self-trapped photonic lattices in anisotropic photorefractive media.
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.
Terhalle
Bernd
B
Institut für Angewandte Physik, Westfälische Wilhelms-Universität, 48149 Münster, Germany.
Träger
Denis
D
Tang
Liqin
L
Imbrock
Jörg
J
Denz
Cornelia
C