Graphene active plasmonics for Terahertz device applications

Taiichi Otsuji, Alexander Dubinov, Maxim Ryzhii, Stephane Albon Boubanga Tombet, Akira Satou, Vladimir Mitin, Michael S. Shur, Victor Ryzhii

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


This paper reviews recent advances in the double-graphene-layer (DGL) active plasmonic heterostructures for the terahertz (THz) device applications. The DGL consists of a core shell in which a thin tunnel barrier layer is sandwiched by the two GLs being independently connected with the side contacts and outer gate stack layers at both sides. The DGL core shell works as a nano-capacitor, exhibiting inter-GL resonant tunneling (RT) when the band offset between the two GLs is aligned. The RT produces a strong nonlinearity with a negative differential conductance in the DGL current-voltage characteristics. The excitation of the graphene plasmons by the THz radiation resonantly modulates the tunneling currentvoltage characteristics. When the band offset is aligned to the THz photon energy, the DGL structure can mediate photonassisted RT, resulting in resonant emission or detection of the THz radiation. The cooperative double-resonant excitation with structure-sensitive graphene plasmons gives rise to various functionalities such as rectification (detection), photomixing, higher harmonic generation, and self-oscillation, in the THz device implementations.

Original languageEnglish
Title of host publicationAutomatic Target Recognition XXV
EditorsFirooz A. Sadjadi, Abhijit Mahalanobis
ISBN (Electronic)9781628415926
Publication statusPublished - 2015
EventAutomatic Target Recognition XXV - Baltimore, United States
Duration: 2015 Apr 202015 Apr 22

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


OtherAutomatic Target Recognition XXV
Country/TerritoryUnited States


  • Detector
  • Graphene
  • Laser
  • Negative differential conductance
  • Photomixer
  • Plasmon
  • Resonant tunneling
  • 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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