Graphene-based 2D-heterostructures for terahertz lasers and amplifiers

D. Yadav, Stephane Albon Boubanga Tombet, A. Satou, T. Tamamushi, T. Watanabe, T. Suemitsu, H. Fukidome, Maki Suemitsu, A. A. Dubinov, V. V. Popov, M. Ryzhii, V. Mitin, M. S. Shur, V. Ryzhii, T. Otsuji

研究成果: Conference contribution

抄録

This paper reviews recent advances in the terahertz (THz) graphene-based 2D-heterostructure lasers and amplifiers. The linear gapless graphene energy spectrum enables population inversion under optical and electrical pumping giving rise to the negative dynamic conductivity in a wide THz frequency range. We first theoretically discovered these phenomena and recently reported on the experimental observation of the amplified spontaneous THz emission and single-mode THz lasing at 100K in the current-injection pumped graphene-channel field-effect transistors (GFETs) with a distributedfeedback dual-gate structure. We also observed the light amplification of stimulated emission of THz radiation driven by graphene-plasmon instability in the asymmetric dual-grating gate (ADGG) GFETs by using a THz time-domain spectroscopy technique. Integrating the graphene surface plasmon polariton (SPP) oscillator into a current-injection graphene THz laser transistor is the most promising approach towards room-temperature intense THz lasing.

本文言語English
ホスト出版物のタイトルTerahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XII
編集者Tianxin Yang, Laurence P. Sadwick
出版社SPIE
ISBN(電子版)9781510624764
DOI
出版ステータスPublished - 2019 1 1
イベントTerahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XII 2019 - San Francisco, United States
継続期間: 2019 2 42019 2 7

出版物シリーズ

名前Proceedings of SPIE - The International Society for Optical Engineering
10917
ISSN(印刷版)0277-786X
ISSN(電子版)1996-756X

Conference

ConferenceTerahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XII 2019
CountryUnited States
CitySan Francisco
Period19/2/419/2/7

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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