Nonlinear optical properties of a two-dimensional nonlinear photonic quasicrystal based on second order cascaded nonlinearities.

We report on a two-dimensional nonlinear photonic quasicrystal constructed by the generalized dual-grid method. One collinear optical parametric generation, cascading two noncollinear frequency doubling processes are realized for multiple second-order cascaded nonlinearities. Optical properties including wave propagating and temperature detuning characteristics were studied theoretically using the coupled nonlinear wave equations. The scheme has potential application in fields such as quantum optics and spectroscopy. [ABSTRACT FROM AUTHOR]