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Optical Engineering

Indium antimonide large-format detector arrays
Author(s): Mike Davis; Mark E. Greiner
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Paper Abstract

Large format infrared imaging sensors are required to achieve simultaneously high resolution and wide field of view image data. Infrared sensors are generally required to be cooled from room temperature to cryogenic temperatures in less than 10 min thousands of times during their lifetime. The challenge is to remove mechanical stress, which is due to different materials with different coefficients of expansion, over a very wide temperature range and at the same time, provide a high sensitivity and high resolution image data. These challenges are met by developing a hybrid where the indium antimonide detector elements (pixels) are unconnected islands that essentially float on a silicon substrate and form a near perfect match to the silicon read-out circuit. Since the pixels are unconnected and isolated from each other, the array is reticulated. This paper shows that the front side illuminated and reticulated element indium antimonide focal plane developed at L-3 Cincinnati Electronics are robust, approach background limited sensitivity limit, and provide the resolution expected of the reticulated pixel array.

Paper Details

Date Published: 1 June 2011
PDF: 7 pages
Opt. Eng. 50(6) 061016 doi: 10.1117/1.3590722
Published in: Optical Engineering Volume 50, Issue 6
Show Author Affiliations
Mike Davis, L-3 Communications Cincinnati Electronics (United States)
Mark E. Greiner, L-3 Communications Cincinnati Electronics (United States)

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