This paper presents a CW terahertz near-field reflectometry setup using metal wires waveguide. This setup, developped at Montpellier University, is working at 100 GHz.
Vortex
Terahertz beam forming
Linear to radial polarization conversion in the THz domain using a passive system
Grosjean, T., Baida, F., Adam, R., Guillet, J. P., Billot, L., Nouvel, P., … & Chusseau, L. (2008). Linear to radial polarization conversion in the THz domain using a passive system. Optics express, 16(23), 18895-18909.
Coupling and propagation of Sommerfeld waves at 100 and 300 GHz
The coupling between a linearly-polarized gaussian beam and a Sommerfeld wave propagating on a circular metallic wire is obtained owing to a differential phase element inserted in front of the metal wire. At millimeter-wavelengths we calculate a theoretical maximum coupling efficiency of 32% for this system in spite of the metal nature and radius in … Read more