title: Experimental and numerical studies of terahertz surface waves on a thin metamaterial film.
abstract: We present experimental and numerical studies of localized terahertz surface waves on a subwavelength-thick metamaterial film consisting of in-plane split-ring resonators. A simple and intuitive model is derived that describes the propagation of surface waves as guided modes in a waveguide filled with a Lorentz-like medium. The effective medium model allows us to deduce the dispersion relation of the surface waves, in excellent agreement with the numerical data obtained from 3D full-wave calculations. Both the accuracy of the analytical model and the numerical calculations are confirmed by spectroscopic terahertz time-domain measurements.
authors.affiliation: Department of Physics and Research Center OPTIMAS, University of Kaiserslautern, D-67663 Kaiserslautern, Germany. breinhard@physik.uni-kl.de
authors.forename: Benjamin
authors.initials: B
authors.lastname: Reinhard
authors.forename: Oliver
authors.initials: O
authors.lastname: Paul
authors.forename: René
authors.initials: R
authors.lastname: Beigang
authors.forename: Marco
authors.initials: M
authors.lastname: Rahm