title: Linear and nonlinear discrete light propagation in weakly modulated large-area two-dimensional photonic lattice slab in LiNbO3:Fe crystal.
abstract: 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.
authors.affiliation: The MOE Key Laboratory of Weak Light Nonlinear Photonics, Nankai University, Tianjin 300457, China.
authors.forename: Xinyuan
authors.initials: X
authors.lastname: Qi
authors.forename: Guoquan
authors.initials: G
authors.lastname: Zhang
authors.forename: Ningning
authors.initials: N
authors.lastname: Xu
authors.forename: Yiling
authors.initials: Y
authors.lastname: Qi
authors.forename: Bin
authors.initials: B
authors.lastname: Han
authors.forename: Yulan
authors.initials: Y
authors.lastname: Fu
authors.forename: Changsha
authors.initials: C
authors.lastname: Duan
authors.forename: Jingjun
authors.initials: J
authors.lastname: Xu
mesh_terms: D003198:Computer Simulation; D003460:Crystallization / Q000379:methods; D008027:Light; D016014:Linear Models; D009556:Niobium / Q000737:chemistry*; D017711:Nonlinear Dynamics; D010087:Oxides / Q000737:chemistry*; D017785:Photons; D012031:Refractometry / Q000379:methods*; D012542:Scattering, Radiation
chemical_list: D010087:Oxides; D009556:Niobium; C091692:lithium niobate