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Tunable plasma wave resonant detection of optical beating in high electron mobility transistor

Jérémi Torres, P. Nouvel, A. Akwoue-Ondo, L. Chusseau, F. Teppe, A. Shchepetov, S. Bollaert

physics.opticsarXiv:physics/0610078

Abstract

We report on tunable terahertz resonant detection of two 1.55 µm cw-lasers beating by plasma waves in AlGaAs/InGaAs/InP high-electron-mobility transistor. We show that the fundamental plasma resonant frequency and its odd harmonics can be tuned with the applied gate-voltage in the range 75-490 GHz. The observed frequency dependence on gate-bias is found to be in good agreement with the theoretical plasma waves dispersion law.

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