Ultrahigh sensitive plasmonic terahertz detectors based on an asymmetric dual-grating gate HEMT structure

Taiichi Otsuji, Stephane Boubanga-Tombet, Takayuki Watanabe, Yudai Tanimoto, Akira Satou, Tetsuya Suemitsu, Yuye Wang, Hiroaki Minamide, Hiromasa Ito, Yahya Moubarak Meziani, Dominique Coquillat, Wojciech Knap, Denis Fateev, Viacheslav Popov

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

We report on ultrahigh sensitive, broadband terahertz (THz) detectors based on asymmetric double-grating-gate (A-DGG) high electron mobility transistors, demonstrating a record responsivity of 2.2 kV/W at 1 THz with a superior low noise equivalent power of 15 pW/√Hz using InGaAs/InAlAs/InP material systems. When THz radiation is absorbed strong THz photocurrent is first generated by the nonlinearity of the plasmon modes resonantly excited in undepleted portions of the 2D electron channel under the high-biased sub-grating of the A-DGG, then the THz photovoltaic response is read out at high-impedance parts of 2D channel under the other sub-grating biased at the level close to the threshold. Extraordinary enhancement by more than two orders of magnitude of the responsivity is verified with respect to that for a symmetric DGG structure.

Original languageEnglish
Title of host publicationTerahertz Physics, Devices, and Systems VI
Subtitle of host publicationAdvanced Applications in Industry and Defense
DOIs
Publication statusPublished - 2012 Dec 1
EventTerahertz Physics, Devices, and Systems VI: Advanced Applications in Industry and Defense - Baltimore, MD, United States
Duration: 2012 Apr 232012 Apr 24

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8363
ISSN (Print)0277-786X

Other

OtherTerahertz Physics, Devices, and Systems VI: Advanced Applications in Industry and Defense
CountryUnited States
CityBaltimore, MD
Period12/4/2312/4/24

Keywords

  • HEMT
  • asymmetry
  • detector
  • grating
  • plasmon
  • terahertz

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • Cite this

    Otsuji, T., Boubanga-Tombet, S., Watanabe, T., Tanimoto, Y., Satou, A., Suemitsu, T., Wang, Y., Minamide, H., Ito, H., Meziani, Y. M., Coquillat, D., Knap, W., Fateev, D., & Popov, V. (2012). Ultrahigh sensitive plasmonic terahertz detectors based on an asymmetric dual-grating gate HEMT structure. In Terahertz Physics, Devices, and Systems VI: Advanced Applications in Industry and Defense [83630P] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 8363). https://doi.org/10.1117/12.919978