A comparative study of absorbing boundary conditions
Journal of Computational Physics
SIAM Journal on Scientific Computing
Spectral methods in MatLab
On time-splitting spectral approximations for the Schrödinger equation in the semiclassical regime
Journal of Computational Physics
Journal of Scientific Computing
The convergence of shooting methods for singular boundary value problems
Mathematics of Computation
Journal of Computational Physics
Spectral Versus Pseudospectral Solutions of the Wave Equation by Waveform Relaxation Methods
Journal of Scientific Computing
Journal of Computational Physics
A mode elimination technique to improve convergence of iteration methods for finding solitary waves
Journal of Computational Physics
Iteration methods for stability spectra of solitary waves
Journal of Computational Physics
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The pseudospectral approach is a well-established method for studies of the wave propagation in various settings. In this paper, we report that the implementation of the pseudospectral approach can be simplified if power-series expansions are used. There is also an added advantage of an improved computational efficiency. We demonstrate how this approach can be implemented for two-dimensional (2D) models that may include material inhomogeneities. Physically relevant examples, taken from optics, are presented to show that, using collocations at Chebyshev points, the power-series approximation may give very accurate 2D soliton solutions of the nonlinear Schrodinger (NLS) equation. To find highly accurate numerical periodic solutions in models including periodic modulations of material parameters, a real-time evolution method (RTEM) is used. A variant of RTEM is applied to a system involving the copropagation of two pulses with different carrier frequencies, that cannot be easily solved by other existing methods.