Title :
A 2-D Artificial Dielectric With
for the Terahertz Region
Author :
Mendis, Rajind ; Mittleman, Daniel M.
Author_Institution :
Dept. of Electr. & Comput. Eng., Rice Univ., Houston, TX, USA
fDate :
7/1/2010 12:00:00 AM
Abstract :
We demonstrate a 2-D artificial dielectric medium suitable for the terahertz region by exploiting the characteristic frequency dependence in the phase velocity of the lowest order transverse-electric (TE1) mode of the parallel-plate waveguide (PPWG). This artificial medium exhibits a plasma-like behavior having a frequency-dependent refractive index that varies between zero and unity. Using this medium, we demonstrate the optical phenomena of total internal reflection and Brewster´s effect, and also demonstrate a convergent PPWG-lens.
Keywords :
dielectric waveguides; lenses; light reflection; parallel plate waveguides; plasma filled waveguides; refractive index; 2D artificial dielectric medium; Brewster effect; characteristic frequency dependence; convergent PPWG-lens; frequency-dependent refractive index; low order transverse-electric mode; optical phenomena; parallel-plate waveguide; phase velocity; plasma-like behavior; terahertz region; total internal reflection; Artificial dielectrics; dispersive media; parallel-plate waveguides (PPWGs); terahertz;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
Conference_Location :
6/7/2010 12:00:00 AM
DOI :
10.1109/TMTT.2010.2050386