Photoconductive Terahertz Antenna with Radial Symmetry
It has been demonstrated recently that it is possible to guide broadband Terahertz pulses utilising a novel coaxial waveguide. This technique is hindered by the difficulty in exciting the radially polarised fundamental mode of the waveguide. To optimise mode matching, a novel radially symmetric photoconductive Terahertz antenna is proposed. Using finite element method simulations and analytical calculations, it is shown that this antenna can generate the desired radial polarisation.
Deibel, J. A.,
& Mittleman, D. M.
(2005). Photoconductive Terahertz Antenna with Radial Symmetry. Electronics Letters, 41 (5), 226-228.