Injection terahertz laser using the resonant inter-layer radiative transitions in double-graphene-layer structure

V. Ryzhii, A. A. Dubinov, V. Ya Aleshkin, M. Ryzhii, T. Otsuji

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)

Abstract

We propose and substantiate the concept of terahertz (THz) laser enabled by the resonant electron radiative transitions between graphene layers (GLs) in double-GL structures. We estimate the THz gain for TM-mode exhibiting very low Drude absorption in GLs and show that the gain can exceed the losses in metal-metal waveguides at the low end of the THz range. The spectrum of the emitted photons can be tuned by the applied voltage. A weak temperature dependence of the THz gain promotes an effective operation at room temperature.

Original languageEnglish
Article number163507
JournalApplied Physics Letters
Volume103
Issue number16
DOIs
Publication statusPublished - 2013 Oct 14

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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