Room-Temperature, Zero-Bias Plasmonic THz Detection by Asymmetric Dual-Grating-Gate HEMT Auteur(s): Watanabe T., Kawasaki T., Satou A., Tombet S. Boubanga, Suemitsu T., Ducournau Guillaume, Coquillat D., Knap W., Minamide H., Ito H., Popov V. V., Meziani Y. M., Otsuji T.
Conference: TERAHERTZ, RF, MILLIMETER, AND SUBMILLIMETER-WAVE TECHNOLOGY AND APPLICATIONS VIII (San Francisco, California, US, 2015) Ref HAL: hal-01163013_v1 DOI: 10.1117/12.2079184 WoS: WOS:000354277500007 Exporter : BibTex | endNote 1 Citation Résumé: We study theoretically and experimentally the plasmonic THz detection by the asymmetric dual-grating-gate HEMT at room temperature without source-to-drain bias. We derive the analytical expressions of photocurrents due to the plasmonic drag and ratchet effects, and we discuss about their frequency dependences. We also compare the theory to the experimentally obtained frequency dependence. It is demonstrated that they agree qualitatively well. |