Imaging arrays of direct detectors in the 0.5-5 THz range are being experimentally developed. Terahertz active imaging with amplitude-modulated quantum cascade lasers emitting at 2.5 and 4.4 THz performed by using an antenna-coupled superconducting microbolometer. We then present two room-temperature terahertz detector technologies compatible with monolithic arrays: i) GaAs Schottky diodes with air-bridge sub-micron anodes; ii) high electron mobility transistors with sub-micron Schottky gate. Performances, requirements and fabrication costs of the different detector technologies are compared.
Monolithic focal plane arrays for terahertz active spectroscopic imaging: an experimental study / Ortolani, Michele; Roberto, Casini; Fabio, Chiarello; Sara, Cibella; Alessandra Di, Gaspare; Florestano, Evangelisti; Vittorio, Foglietti; Ennio, Giovine; Roberto, Leoni; Guido, Torrioli; Alessandro, Tredicucci; Miriam S., Vitiello; Gaetano, Scamarcio; Rengarajan, Sudharsanan; Gail J., Brown; Manijeh, Razeghi. - STAMPA. - 7945:(2011), pp. 79450U-79450U-9. (Intervento presentato al convegno SPIE Photonics West 2011 tenutosi a san francisco, CA nel febbraio 2011) [10.1117/12.869468].
Monolithic focal plane arrays for terahertz active spectroscopic imaging: an experimental study
ORTOLANI, MICHELE;
2011
Abstract
Imaging arrays of direct detectors in the 0.5-5 THz range are being experimentally developed. Terahertz active imaging with amplitude-modulated quantum cascade lasers emitting at 2.5 and 4.4 THz performed by using an antenna-coupled superconducting microbolometer. We then present two room-temperature terahertz detector technologies compatible with monolithic arrays: i) GaAs Schottky diodes with air-bridge sub-micron anodes; ii) high electron mobility transistors with sub-micron Schottky gate. Performances, requirements and fabrication costs of the different detector technologies are compared.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.