Plane-Wave Impulse Response of a Debye Half Space

Abstract

This report describes the computation of the time-domain reflection coefficient for a transient plane wave incident on a planar interface between free space and a Debye medium. Both the TE and TM polarization cases are considered. The reflection coefficients are written in a simple, compact form and involve a single convolution between exponential and Bessel functions. The use of the expressions in the characterization of Debye materials is explored.

Keywords:

• transient scattering
• planar materials
• dispersive materials
• material characterization