Development of numerical methods to solve partial differential equations
is extremely important as most of the real life physical systems can be
formulated in the form of these. By solving partial differential
equations, the characteristics of a physical system can be simulated
even without performing laboratory experiments. This book discusses the
development of few efficient numerical tools to solve diffusion and wave
equation. Methods for treating diffusion of atoms, molecules, ions and
charge carriers in solid state and optoelectronic structures are
presented. Additionally, split-step based numerical method for
bi-directional wave propagation is presented. This method requires only
matrix multiplications at each step and no inversion or diagonalization
is required.The numerical tools presented in the book are applied to
analyze numerous diffusion and wave propagation based processes.