Terahertz Near-field Imaging with Tapered Sommerfeld-wire Waveguides

摘要

In this work, we investigate the near-field properties of a tapered single wire waveguide, also known as a Sommerfeld wire, for application in sub-wavelength terahertz near-field imaging. In reflection geometry, several waveguide terminations are investigated. Furthermore, to examine the imaging capability of a 20μm radius taper tip, several metal structures were measured. Using a tapered Sommerfeld wire, it was possible to resolve features corresponding to λ/50 at 0.3THz.