Investigation of wide-aperture plasmonic detectors by a tightly focused terahertz beam

2nd Russia-Japan-USA Symposium on the Fundamental and Applied Problems of Terahertz Devices and Technologies

Yermolaev, D.M.^1 ; Polushkin, Ye.A.^1 ; Zemlyakov, V.E.^1 ; Maleev, N.A.^2 ; Popov, V.V.^3 ; Muravjov, A.V.^4 ; Rumyantsev, S.L.^4 ; Shur, M.S.^4 ; Shapoval, S.Yu.^1

Institute of Microelectronic Technology and High-Purity Materials, Russia^1

Ioffe Physical Technical Institute, Russia^2

Kotelnikov Institute of Radio Engineering and Electronics (Saratov Branch), Russia^3

Rensselaer Polytechnic Institute, United States^4

关键词: Bow-tie antennas;    Detector structure;    Effective area;    Raster scanning;    Single gates;    Tera Hertz;    Terahertz radiation;    Terahertz response;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/486/1/012013/pdf
DOI  :  10.1088/1742-6596/486/1/012013

来源: IOP

【 摘 要 】

Terahertz response of wide-aperture plasmonic detectors is studied experimentally by using a focused terahertz radiation with frequencies 1.63, 1.89 and 2.55 THz. Two different types of plasmonic detector have been investigated: (i) field-effect transistor (FET) with a grating-gate of large (2×2 mm2) area and (ii) FET with a single gate and ohmic contacts forming a bow-tie antenna. By raster scanning the detector area by using a tightly focused terahertz beam, we studied the contribution of individual parts of the detector to the total detection response and we determined the effective area of the detector structures.