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

D. Yadav, S. Boubanga-Tombet, A. Satou, T. Tamamushi, T. Watanabe, T. Suemitsu, H. Fukidome, M. 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
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
国/地域United States
CitySan Francisco
Period19/2/419/2/7

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • コンピュータ サイエンスの応用
  • 応用数学
  • 電子工学および電気工学

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