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Proceedings Paper

Low-Background Application Of Schottky-Barrier IR Sensors
Author(s): M J Cantella; N C Davison; C. H. Gylfphe; J. P. Mattia; B. Y Tsaur
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Paper Abstract

Large staring PtSi Schottky-barrier focal plane array (FPA) sensors are fabricated using near-standard silicon technology and have represented a practical way to achieve outstanding thermal sensitivity with earth-background imagery. Their application potential could be extended significantly if background-limited operation can be maintained with low-level space backgrounds. This paper will discuss noise, dark current, and readout efficiency performance requirements and present low-noise test data obtained on 160x244-element, 5.5um-cutoff PtSi FPA's operated with exposures 10 times lower than those from typical earth backgrounds. In addition, test data will be presented on developmental IrSi detectors which have a 10um cutoff and have a quantum efficiency at 5um an order of magnitude higher than that of PtSi. This improvment in responsivity combined with low noise performance will permit design of high sensitivity sensors in both MWIR and LWIR bands.

Paper Details

Date Published: 23 May 1989
PDF: 19 pages
Proc. SPIE 1071, Optical Sensors and Electronic Photography, (23 May 1989); doi: 10.1117/12.952503
Show Author Affiliations
M J Cantella, MIT Lincoln Laboratory (United States)
N C Davison, MIT Lincoln Laboratory (United States)
C. H. Gylfphe, MIT Lincoln Laboratory (United States)
J. P. Mattia, MIT Lincoln Laboratory (United States)
B. Y Tsaur, MIT Lincoln Laboratory (United States)


Published in SPIE Proceedings Vol. 1071:
Optical Sensors and Electronic Photography
Morley M. Blouke; Donald Pophal, Editor(s)

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