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Proceedings Paper

Uncooled infrared thermal detector arrays
Author(s): N. M. Shorrocks; Stephen G. Porter; Roger W. Whatmore; Andy D. Parsons; J. N. Gooding; David J. Pedder
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Paper Abstract

Uncooled detectors of infra-red radiation exploiting the pyroelectric effect have considerable potential for thermal imaging applications when used in 1-D and 2-D arrays. This paper discusses the factors controlling the performances of such arrays. Lead scandium tantalate is a new ferroelectric ceramic which gives a very high figure-of-meriL The properties of this material are reported and compared and contrasted with those of other ferroelectric ceramics. The possibilities for direct fabrication of thin films of the materials are discussed. Linear arrays of detectors with D*'s of up to 5x108 cmHzlaW' and 2-dimensional arrays (up to lOOxlOO) with NETD's below 0.2K (25Hz,f/i) have been developed. The technologies for processing these arrays, including the use of reticulation for thermal MTF and microphony improvement, are discussed.

Paper Details

Date Published: 1 October 1990
PDF: 7 pages
Proc. SPIE 1320, Infrared Technology and Applications, (1 October 1990); doi: 10.1117/12.22315
Show Author Affiliations
N. M. Shorrocks, Allen Clark Research Ctr./Ples (United Kingdom)
Stephen G. Porter, Allen Clark Research Ctr./Ples (United Kingdom)
Roger W. Whatmore, Allen Clark Research Ctr./Ples (United Kingdom)
Andy D. Parsons, Allen Clark Research Ctr./Ples (United Kingdom)
J. N. Gooding, Allen Clark Research Ctr./Ples (United Kingdom)
David J. Pedder, Allen Clark Research Ctr./Ples (United Kingdom)

Published in SPIE Proceedings Vol. 1320:
Infrared Technology and Applications
Alan H. Lettington, Editor(s)

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