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

doi:10.1117/12.2516494

1 March 2019 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

Author Affiliations +

Proceedings Volume 10917, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XII; 109170G (2019) https://doi.org/10.1117/12.2516494
Event: SPIE OPTO, 2019, San Francisco, California, United States

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.

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Citation Download Citation

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, and T. Otsuji "Graphene-based 2D-heterostructures for terahertz lasers and amplifiers", Proc. SPIE 10917, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XII, 109170G (1 March 2019); https://doi.org/10.1117/12.2516494

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