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, M., Roberto, C., Fabio, C., Sara, C., Alessandra Di, G., Florestano, E., Vittorio, F., Ennio, G., Roberto, L., Guido, T., Alessandro, T., Miriam S., V., Gaetano, S., Rengarajan, S., Gail J., B., Manijeh, R.. - STAMPA. - 7945:(2011), pp. 79450U-79450U-9. (SPIE Photonics West 2011 san francisco, CA 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.
