Related Experiment Video
Updated: Jun 10, 2026
Design, Fabrication, and Experimental Characterization of Plasmonic Photoconductive Terahertz Emitters
Published on: July 8, 2013
Enhanced electromagnetic coupling between terahertz radiation and plasmons in a grating-gate transistor structure on
Vyacheslav V Popov1, Denis V Fateev, Olga V Polischuk
1Department of Electrical, Computer, and System Engineering and Center for Integrated Electronics, CII 9015, Rensselaer Polytechnic Institute, Troy, 12180 New York, USA. popov@soire.renet.ru
Abstract:
We have shown that the electromagnetic coupling of a grating-gate plasmonic detector to terahertz radiation can be considerably enhanced by placing the detector onto a membrane substrate and using a narrow-slit grating-gate. The responsivity of the membrane detector can be enhanced by a factor of 50 as compared to a conventional grating-gate plasmonic detector on a bulk substrate due to enhanced electromagnetic coupling between the plasmons and terahertz radiation.
