DocumentCode :
3807404
Title :
Plasma waves subterahertz optical beating detection and enhancement in long-channel high-electron-mobility transistors: experiments and modeling
Author :
Jeremi Torres;Hugues Marinchio;Philippe Nouvel;Giulio Sabatini;Christophe Palermo;Luca Varani;Laurent Chusseau;Pavel Shiktorov;Evgenij Starikov;Viktoras Gruzinskis
Author_Institution :
Univ. Montpellier II, Montpellier
Volume :
14
Issue :
2
fYear :
2008
Firstpage :
491
Lastpage :
497
Abstract :
A photomixed laser beam of two 1.55 mum continuous-wave lasers is used for interband photoexcitation in submicron gate length InAlAs/InGaAs transistors. Results show the clear excitation of plasma oscillation modes in the transistor channel. A strong amplification of the optical beating detection in the 0-600 GHz range is observed as a function of drain-source voltage. Numerical results, using hydrodynamic model coupled to a pseudo-2D Poisson equation, are in good agreement with experiments concerning the plasma frequency dependence with gate voltage. Moreover, this model confirms both optical beating detection at subterahertz frequencies and the enhancement observed when drain-source voltage increases.
Keywords :
"Plasma waves","Optical detectors","HEMTs","MODFETs","Stimulated emission","Voltage","Laser modes","Laser beams","Indium gallium arsenide"
Journal_Title :
IEEE Journal of Selected Topics in Quantum Electronics
Publisher :
ieee
ISSN :
1077-260X
Type :
jour
DOI :
10.1109/JSTQE.2007.910988
Filename :
4481133
Link To Document :
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