Open AccessLinear and nonlinear discrete light propagation in weakly modulated large-area two-dimensional photonic lattice slab in LiNbO_3:Fe crystal
Author(s) -
Xinyuan Qi,
Guoquan Zhang,
Ningning Xu,
Yiling Qi,
Bin Han,
Yulan Fu,
Changsha Duan,
Jingjun Xu
Publication year - 2009
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.17.023078
Subject(s) - slab , photonic crystal , optics , photorefractive effect , lithium niobate , materials science , square lattice , diffraction , lattice (music) , photonics , optoelectronics , physics , condensed matter physics , geophysics , acoustics , ising model
A weakly modulated large-area two-dimensional square photonic lattice slab was fabricated through optical induction technique in a photorefractive photovoltaic LiNbO(3):Fe crystal. Bragg-matched diffraction technique was used to characterize the square photonic lattice slab. Interestingly, linear discrete diffraction typical for waveguide arrays was observed in such a square photonic lattice slab, indicating that the lattice slab can be viewed effectively as a one-dimensional waveguide array. Furthermore, discrete soliton was demonstrated in the photonic lattice slab due to a saturable self-defocusing nonlinearity arising from the bulk photorefractive photovoltaic effect of LiNbO(3):Fe.