Title :
Large-area photoconductive terahertz detectors
Author :
Winnerl, S. ; Peter, F. ; Nitsche, S. ; Dreyhaupt, A. ; Drachenko, O. ; Schneider, H. ; Helm, M. ; Köhler, K.
Author_Institution :
Inst. of Ion Beam Phys. & Mater. Res., Dresden
Abstract :
We present a novel non-resonant photoconductive antenna for coherent detection of THz radiation. The antenna consists of an interdigitated electrode structure, where every other electrode gap is covered by a second metallization layer. Different substrate materials with different carrier lifetimes are compared. These antennas are easy to use and offer a high degree of freedom with respect to the focusing of both the THz and the gating beam.
Keywords :
photoconducting materials; submillimetre wave antennas; submillimetre wave detectors; THz radiation; interdigitated electrode; nonresonant photoconductive antenna; photoconductive terahertz detectors; Bandwidth; Dipole antennas; Electrodes; Gallium arsenide; Metallization; Optical pulses; Photoconducting materials; Photoconductivity; Physics; Radiation detectors;
Conference_Titel :
Infrared and Millimeter Waves, 2007 and the 2007 15th International Conference on Terahertz Electronics. IRMMW-THz. Joint 32nd International Conference on
Conference_Location :
Cardiff
Print_ISBN :
978-1-4244-1438-3
DOI :
10.1109/ICIMW.2007.4516708
