Enhanced electromagnetic coupling between terahertz radiation and plasmons in a grating-gate transistor structure on membrane substrate.
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.
Popov
Vyacheslav V
VV
Department 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
Fateev
Denis V
DV
Polischuk
Olga V
OV
Shur
Michael S
MS
D055590:Electromagnetic Phenomena; D004867:Equipment Design; D008027:Light; D008962:Models, Theoretical; D012031:Refractometry / Q000295:instrumentation*; D012542:Scattering, Radiation; D020349:Surface Plasmon Resonance / Q000295:instrumentation*; D055053:Terahertz Radiation