Terahertz form birefringence.
We report on one-dimensional photonic crystals designed to exhibit a pronounced form birefringence at terahertz frequencies. The crystals can be used as volumetric quasioptical elements for a broad frequency range. Theoretical simulations of the dielectric parameters of these structures are presented as well as measurement results of a polymeric crystal that exhibit a birefringence of 0.25 at 300 GHz. As a potential application, the device is exemplarily used as terahertz wave plate.
Scheller
Maik
M
Institut für Hochfrequenztechnik, Technische Universität Braunschweig, Braunschweig, Germany. maik.scheller@ihf.tu-bs.de
Jördens
Christian
C
Koch
Martin
M
D001718:Birefringence; D008420:Manufactured Materials; D008422:Materials Testing; D012031:Refractometry / Q000379:methods*; D055053:Terahertz Radiation