title: Waveguided spoof surface plasmons with deep-subwavelength lateral confinement.
abstract: We present a new type of waveguide scheme for terahertz circuitry based on the concept of spoof surface plasmons. This structure is composed of a one-dimensional array of L-shaped metallic elements horizontally attached to a metal surface. The dispersion relation of the surface electromagnetic modes supported by this system presents a very weak dependence with the lateral dimension and the modes are very deep-subwavelength confined with a long-enough propagation length.
authors.affiliation: Departamento de Fisica Teorica de la Materia Condensada, Universidad Autonoma de Madrid, E-28049 Madrid, Spain.
authors.forename: Diego
authors.initials: D
authors.lastname: Martin-Cano
authors.forename: O
authors.initials: O
authors.lastname: Quevedo-Teruel
authors.forename: Esteban
authors.initials: E
authors.lastname: Moreno
authors.forename: L
authors.initials: L
authors.lastname: Martin-Moreno
authors.forename: F J
authors.initials: FJ
authors.lastname: Garcia-Vidal