@inproceedings{3825dad417ff49898bf7965bec14417c,
title = "Graphene-based 2D-heterostructures for terahertz lasers and amplifiers",
abstract = "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.",
keywords = "2D materials, Amplifier, Graphene, Heterostructures, Laser, Terahertz",
author = "D. Yadav and S. Boubanga-Tombet and A. Satou and T. Tamamushi and T. Watanabe and T. Suemitsu and H. Fukidome and M. Suemitsu and Dubinov, {A. A.} and Popov, {V. V.} and M. Ryzhii and V. Mitin and Shur, {M. S.} and V. Ryzhii and T. Otsuji",
note = "Funding Information: The authors thank J. Mitsushio, K. Sugawara, Y. Yabe, T. Fukushima, Y. Tobah, D. Svintsov, O. Polischuk, V. Ya Aleshkin, K. Maussang, D. But, and W. Knap for their contributions. The authors also thank S. Mikhailov for his valuable discussion. This work was supported by JSPS KAKENHI #16H06361, #16K14243, and 18H05331, Japan. The work at RPI was supported by the US Army Research Laboratory and by the US Office of Naval Research. Publisher Copyright: {\textcopyright} 2019 SPIE.; Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XII 2019 ; Conference date: 04-02-2019 Through 07-02-2019",
year = "2019",
doi = "10.1117/12.2516494",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Tianxin Yang and Sadwick, {Laurence P.}",
booktitle = "Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XII",
address = "United States",
}