Tunable room temperature terahertz sources based on two dimensional plasma instability in GaN HEMTs - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2009

Tunable room temperature terahertz sources based on two dimensional plasma instability in GaN HEMTs

Résumé

In this work, we report on room temperature terahertz radiation from sub-micron size GaN/AlGaN based high electron mobility transistors (HEMTs). They could successfully replace the standard Fourier Transform spectrometer source and were investigated with a standard Si-bolometer as a detector. The relatively broad (~1THz) emission line was observed. The maxima were found to be tunable by the gate voltage between 0.75 and 2.1 THz. The observed emission was interpreted as due to the current driven plasma waves instability in the two-dimensional electron gas. The emitted power from a single device reached 150 nW, showing possible application of these transistors as compact sources for terahertz spectroscopy and imaging.

Dates et versions

hal-00546387 , version 1 (14-12-2010)

Identifiants

Citer

A. El Fatimy, T. Suemitsu, T. Otsuji, N. Dyakonova, W. Knap, et al.. Tunable room temperature terahertz sources based on two dimensional plasma instability in GaN HEMTs. 16th International Conference on Electron Dynamics in Semiconductors, Optoelectronics and Nanostructures (EDISON 16), Aug 2009, France. pp.2072, ⟨10.1088/1742-6596/193/1/012072⟩. ⟨hal-00546387⟩
20 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More