Terahertz detection in a double-grating-gate heterotransistor Auteur(s): Coquillat D., Nadar S., Teppe F., Diakonova N., Boubanga-Tombet S., Knap W., Nishimura T., Meziani Y. M., Otsuji T., Popov V. V., Tsymbalov G. M.
Conference: 16TH INTERNATIONAL CONFERENCE ON ELECTRON DYNAMICS IN SEMICONDUCTORS, OPTOELECTRONICS AND NANOSTRUCTURES (EDISON 16) (, FR, 2009-08-24) Ref HAL: hal-00545987_v1 DOI: 10.1088/1742-6596/193/1/012074 WoS: 000277100400074 Exporter : BibTex | endNote 2 Citations Résumé: We observed a photovoltaic non-resonant terahertz photoresponse in a InGaAs/GaAs heterostructure with a large area double-grating-gate at room temperature. Semi-quantitative estimation of the characteristic detection length combined with self-consistent calculations of the electric fields exited in the structure by incoming terahertz radiation allowed us to interpret this detection as coming from the depleted regions of the channel. |