Time-domain surface impedance of a plasmonic half-space

In this paper we report a part of the results of the research that has been carried out thanks to the financial support of the EU-FP7 CARE (Coordinating the Antenna Research in Europe) Project. As a result of the established cooperation between BUT (Brno University of Technology, the Czech Republic) and K. U. Leuven (Katholieke Universiteit Leuven, Belgium) we present the time-domain surface impedance connected with a plane-wave incidence on a half-space with plasmonic properties. It is shown that by a simple choice of branch-cuts the time-domain surface impedance can be expressed via a definite one-dimensional integral of elementary functions only. Illustrative numerical examples are presented.