A Novel Unconditionally Stable PSTD Method Based on Weighted Laguerre Polynomial Expansion

Abstract

A novel unconditionally stable pseudo-spectral time-domain (US-PSTD) method is implemented by virtue of a weighted Laguerre polynomial expansion. This novel algorithm preserves both unconditional stability and less mandatory spatial resolution, and hence is proved to be an efficient and accurate method. Numerical examples are included to validate the proposed algorithm.