Enhanced electromagnetic coupling between terahertz radiation and plasmons in a grating-gate transistor structure on membrane substrate | Zendy

V. V. Popov | Zendy; D. V. Fateev | Zendy; O. V. Polischuk | Zendy; M. S. Shur | Zendy

Open Access

Enhanced electromagnetic coupling between terahertz radiation and plasmons in a grating-gate transistor structure on membrane substrate

Author(s) -

V. V. Popov,

D. V. Fateev,

O. V. Polischuk,

M. S. Shur

Publication year - 2010

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.18.016771

Subject(s) - terahertz radiation , plasmon , grating , optoelectronics , optics , materials science , responsivity , surface plasmon , detector , substrate (aquarium) , coupling (piping) , electromagnetic radiation , physics , photodetector , oceanography , metallurgy , geology

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.

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