Abstract

Parametric interactions in periodically poled lithium niobate are studied by using 2D non-paraxial finite-difference beam propagation method based on Pade (1,1) approximant of propagation operator and implicit quasi-Crank-Nicholson scheme. The nonlinear perfectly matched layer boundary conditions for non-paraxial beam propagation method are developed and applied to the simulation of parametric spatial solitons. Its effectiveness is verified by way of comparison of different realization of transparent boundary conditions.

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