Detection of a 2.8 THz quantum cascade laser with a semiconductor nanowire field-effect transistor coupled to a bow-tie antenna
Authors: Ravaro M., Locatelli M., Viti L., Ercolani D., Consolino L., Bartalini S., Sorba L., Vitiello M. S., De Natale P.
Autors Affiliation: INO, Istituto Nazionale di Ottica, CNR, Largo E. Fermi 6, Firenze I-50125, Italy; LENS, European Laboratory for Nonlinear Spectroscopy, Via N. Carrara 1, Sesto Fiorentino (FI) I-50019, Italy; NEST, Istituto Nanoscienze, CNR and Scuola Normale Superiore, Piazza San Silvestro 12, Pisa I-56127, Italy
Abstract: The use of a high-electron mobility semiconductor nanowire as transistor channel has recently allowed the extension of the spectral coverage of THz field-effect transistor detectors up to 1.5 THz. In this report, we demonstrate efficient operation of a field-effect transistor detector based on a semiconductor nanowire at a much higher frequency, 2.8 THz, with a responsivity approximate to 5 V/W in a bandwidth approximate to 100 kHz, thus proving the full potential of such approach for the detection of THz quantum cascade lasers. Finally, such a THz sensing system is exploited to perform raster scan transmission imaging, with high spatial resolution, signal-to-noise ratio, and acquisition rate. (C) 2014 AIP Publishing LLC.
Journal/Review: APPLIED PHYSICS LETTERS
Volume: 104 (8) Pages from: 083116 to: 083116
More Information: This work was partly supported by the Italian Ministry of Education, University, and Research (MIUR) through the program \”FIRB – Futuro in Ricerca 2010\” RBFR10LULP \”Fundamental research on Terahertz photonic devices.\”KeyWords: Antennas; Field effect transistors; Quantum cascade lasers; Sensors, Acquisition rates; High spatial resolution; Higher frequencies; Mobility semiconductors; Semiconductor nanowire; THz quantum cascade lasers; Transistor channels; Transmission imaging, NanowiresDOI: 10.1063/1.4867074Citations: 12data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2019-09-08References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here