3D-PSTD for modelling second harmonic generation in periodically poled lithium niobate ridge-type waveguides
arXiv:1509.07097 · doi:10.1364/JOSAB.33.000703
Abstract
We report an application of the tri-dimensional pseudo-spectral time domain algorithm, that solves with accuracy the nonlinear Maxwell's equations, to predict second harmonic generation in lithium niobate ridge-type waveguides with high index contrast. Characteristics of the nonlinear process such as conversion efficiency as well as impact of the multimode character of the waveguide are investigated as a function of the waveguide geometry in uniformly and periodically poled medium.
10 pages, 8 figures