Coherent terahertz detection with a large-area photoconductive antenna
Coherent terahertz detection with a large-area photoconductive antenna
Peter, F.; Winnerl, S.; Nitsche, S.; Dreyhaupt, A.; Schneider, H.; Helm, M.
We present a nonresonant photoconductive terahertz detection antenna suitable for detection of both focused and unfocused terahertz radiations. Our system consists of a scalable terahertz emitter based on an interdigitated electrode structure and a detection antenna with similar electrode geometry. While the emitter is fabricated on semi-insulating GaAs we compare different ion-implanted GaAs-based detection antennas. We studied the dependence of the measured terahertz signal on the power and spot size of the gating laser pulse. In addition we compare the performance of our antenna with that of electro-optical sampling.
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Applied Physics Letters 91(2007)8, 081109
DOI: 10.1063/1.2772783
Cited 40 times in Scopus
Permalink: https://www.hzdr.de/publications/Publ-10296
Publ.-Id: 10296