Implementation of Inhomogeneous Broadening in Time-Domain Dispersive Maxwell Solvers

We present a general approach for implementing inhomogeneous broadening (time-dependent decay) in time do-main (TD) dispersive Maxwell solvers. The classical idealized Lorentz, Drude, and Debye models are extended to Gauss-Lorentz, Gauss-Drude, and Gauss-Debye models, respectively. The efficient TD implementation is developed employing mini-max optimized semi-analytical approximation (MiMOSA). It is rigorously tested for all models and experimental data with an in-house FDTD solver and commercial FDTD software.