Terahertz planar structures for microscopy and metamaterials

Summary form only given. The propagation of THz waves on a single metallic strip will be presented. The properties and basic applications of this Planar Goubau- Sommerfeld Line (PGSL) will be shown. For example one can realize filters in different ways. The topology of this line is well suited for the excitation of metamaterial´s unit cell like split ring resonators (SRR). We can also take benefit of the propagation on a single strip for microscopy applications. This is an original approach especially in order to “bring” the THz wave to the sample in a guided way instead of a commonly used free space propagation and scattering by a tip. Preliminary results show a highly subwavelength resolution.