| HAL : hal-00430452, version 1 |
| arXiv : 0907.2523 |
| DOI : 10.1007/s10762-009-9564-9 |
| Fiche détaillée | Récupérer au format |
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| Journal of Infrared, Millimeter and Terahertz Waves 30, 12 (2009) 1319-1337 |
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| Field Effect Transistors for Terahertz Detection: Physics and First Imaging Applications |
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| W. Knap 1Michel Dyakonov 2 |
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| (09/12/2009) |
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| Resonant frequencies of the two-dimensional plasma in FETs increase with the reduction of the channel dimensions and can reach the THz range for sub-micron gate lengths. Nonlinear properties of the electron plasma in the transistor channel can be used for the detection and mixing of THz frequencies. At cryogenic temperatures resonant and gate voltage tunable detection related to plasma waves resonances, is observed. At room temperature, when plasma oscillations are overdamped, the FET can operate as an efficient broadband THz detector. We present the main theoretical and experimental results on THz detection by FETs in the context of their possible application for THz imaging. |
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| 1 : | Groupe d'étude des semiconducteurs (GES) |
| CNRS : UMR5650 – Université Montpellier II - Sciences et techniques | |
| 2 : | Laboratoire de Physique Théorique et Astroparticules (LPTA) |
| CNRS : UMR5207 – IN2P3 – Université Montpellier II - Sciences et techniques | |
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| Domaine | : | Physique/Matière Condensée/Systèmes mésoscopiques et effet Hall quantique Physique/Matière Condensée/Autre |
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| THz detectors - Field-effect transistors - Plasma waves - Imaging |
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| Lien vers le texte intégral : |
| hal-00430452, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00430452 | |
| oai:hal.archives-ouvertes.fr:hal-00430452 | |
| Contributeur : Logiciel Aigle | |
| Déposé pour le compte de : | |
| Soumis le : Vendredi 6 Novembre 2009, 18:53:04 | |
| Dernière modification le : Lundi 9 Novembre 2009, 16:04:17 | |