Abstract
The nonlinear perfectly matched layer (NL-PML) boundary conditions were successfully applied to the nonparaxial beam propagation method. It is demonstrated that the NL-PML is extremely effective in absorbing the outgoing spatial solitons that impinge the boundary of computation domain for a wide angular spectrum of wave propagation. Using of sufficiently smooth conductivity profiles and termination of NL-PMLmedia by controlled transparent boundary conditions offer further significant improvement in the accuracy of the numerical solutions of the nonparaxial beam propagation method at the grazing angles.
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