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Proceedings Paper

Monolithic focal plane arrays for terahertz active spectroscopic imaging: an experimental study
Author(s): Michele Ortolani; 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
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Paper 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.

Paper Details

Date Published: 24 January 2011
PDF: 9 pages
Proc. SPIE 7945, Quantum Sensing and Nanophotonic Devices VIII, 79450U (24 January 2011); doi: 10.1117/12.869468
Show Author Affiliations
Michele Ortolani, CNR, Istituto di Fotonica e Nanotecnologie (Italy)
Roberto Casini, CNR, Istituto di Fotonica e Nanotecnologie (Italy)
Fabio Chiarello, CNR, Istituto di Fotonica e Nanotecnologie (Italy)
Sara Cibella, CNR, Istituto di Fotonica e Nanotecnologie (Italy)
Alessandra Di Gaspare, CNR, Istituto di Fotonica e Nanotecnologie (Italy)
Florestano Evangelisti, CNR, Istituto di Fotonica e Nanotecnologie (Italy)
Univ. Roma Tre (Italy)
Vittorio Foglietti, CNR, Istituto di Fotonica e Nanotecnologie (Italy)
Ennio Giovine, CNR, Istituto di Fotonica e Nanotecnologie (Italy)
Roberto Leoni, CNR, Istituto di Fotonica e Nanotecnologie (Italy)
Guido Torrioli, CNR, Istituto di Fotonica e Nanotecnologie (Italy)
Alessandro Tredicucci, CNR, Istituto Nanoscienze (Italy)
Miriam S. Vitiello, CNR, Istituto Nanoscienze (Italy)
CNR, Istituto di Fisica Applicata N. Carrara (Italy)
CNR, Istituto di Fotonica e Nanotecnologie, Univ. di Bari (Italy)
Gaetano Scamarcio, CNR, Istituto di Fotonica e Nanotecnologie, Univ. di Bari (Italy)


Published in SPIE Proceedings Vol. 7945:
Quantum Sensing and Nanophotonic Devices VIII
Manijeh Razeghi; Rengarajan Sudharsanan; Gail J. Brown, Editor(s)

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