Current-injection terahertz lasing in a distributed-feedback dual-gate graphene-channel transistor

G. Tamamushi, T. Watanabe, J. Mitsushio, A. A. Dubinov, A. Satou, T. Suemitsu, M. Ryzhii, V. Ryzhii, T. Otsuji

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

1 Citation (Scopus)

Abstract

This paper reviews recent advancement on the research toward graphene-based terahertz (THz) lasers. Optical and/ or injection pumping of graphene can enable negative-dynamic conductivity in the THz spectral range, which may lead to new types of THz lasers. A forward-biased graphene structure with a lateral p-i-n junction was implemented in a distributed-feedback (DFB) dual-gate graphene-channel FET and observed a single mode emission at 5.2 THz at 100K. The observed spectral linewidth fairly agrees with the modal gain analysis based on DFB-Fabry-Perrot hybrid-cavity-mode modeling. Although the results obtained are still preliminary level, the observed emission could be interpreted as THz lasing in population-inverted graphene by carrier-injection.

Original languageEnglish
Title of host publicationQuantum Sensing and Nano Electronics and Photonics XIV
EditorsManijeh Razeghi
PublisherSPIE
ISBN (Electronic)9781510606630
DOIs
Publication statusPublished - 2017
EventQuantum Sensing and Nano Electronics and Photonics XIV 2017 - San Francisco, United States
Duration: 2017 Jan 292017 Feb 2

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume10111
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherQuantum Sensing and Nano Electronics and Photonics XIV 2017
Country/TerritoryUnited States
CitySan Francisco
Period17/1/2917/2/2

Keywords

  • Current injection
  • Graphene
  • Lasers
  • P-i-n junction
  • Terahertz
  • Transistors

ASJC Scopus subject areas

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

Fingerprint

Dive into the research topics of 'Current-injection terahertz lasing in a distributed-feedback dual-gate graphene-channel transistor'. Together they form a unique fingerprint.

Cite this