This letter presents a scattered-field formulation for modeling dispersive media using the finite-difference time-domain (FDTD) method. Specifically, the auxiliary differential equation method is applied to Drude and Lorentz media for a scattered field FDTD model. The present technique can also be applied in a straightforward manner to Debye media. Excellent agreement is achieved between the FDTD-calculated and exact theoretical results for the reflection coefficient in half-space problems.
- Auxiliary differential equation (ADE) method
- Dispersive media
- Finite-difference time-domain (FDTD) method
ASJC Scopus subject areas
- Condensed Matter Physics
- Electrical and Electronic Engineering