Efficiency enhancement of emission of terahertz radiation by optical excitation from dual grating gate HEMT

Y. M. Meziani, T. Nishimura, H. Handa, H. Tsuda, T. Suemitsu, W. Knap, T. Otsuji, E. Sano, G. M. Tsymbalov, V. V. Popov

Research output: Contribution to journalArticlepeer-review

Abstract

We investigated the emission of terahertz radiation from a doubly interdigitated grating gates high electron mobility transistor. The experiment was performed using Fourier spectrometer system coupled with high sensitive 4 K Silicon bolometer under the vacuum. The observed emission was explained as due to the excitation of the plasma waves by means of hot 2D plasmons. We also investigated the optical stimulation of the plasma waves by subjecting the device to a CW 1.5 μm laser beam. Dependence of the emission on the gate bias (i.e. on electron density) was observed and interpreted as due to the self oscillation of the plasma waves.

Original languageEnglish
Article number031980
JournalJournal of Nanophotonics
Volume3
Issue number1
DOIs
Publication statusPublished - 2009 Dec 1

Keywords

  • Terahertz rays
  • high electron mobility transistors
  • plasma waves
  • two-dimensional electron gaz

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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