Time-Domain Modeling of Dispersive Drude–Lorentz Media (Wave Optics)

Application ID: 22281

This tutorial shows how to solve the full time-dependent wave equation in dispersive media such as plasmas and semiconductors. The 2D TM in-plane wave model solves for the vector potential from the wave equation and for an auxiliary electric polarization density from an ordinary differential equation.

The geometry consists of a single dispersive slab with a sub-wavelength slit in it. Periodic boundary conditions are applied, thus physically this is an array of slits. The source of electromagnetic radiation is a plane wave pulse with flat front and Gaussian temporal shape.

This model example illustrates applications of this type that would nominally be built using the following products: