Linear and nonlinear discrete light propagation in weakly modulated large-area two-dimensional photonic lattice slab in LiNbO3:Fe crystal.
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.
Qi
Xinyuan
X
The MOE Key Laboratory of Weak Light Nonlinear Photonics, Nankai University, Tianjin 300457, China.
Zhang
Guoquan
G
Xu
Ningning
N
Qi
Yiling
Y
Han
Bin
B
Fu
Yulan
Y
Duan
Changsha
C
Xu
Jingjun
J
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
D010087:Oxides; D009556:Niobium; C091692:lithium niobate