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Proceedings Paper

InGaAs-on-Si photodetectors for high-sensitivity detection
Author(s): Martin Bitter; Z. Pan; Sigurgeir Kristjansson; Lee Boman; Rick Gold; Alexandre Pauchard
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Paper Abstract

Programs in both the U.S. and Britain are attempting to apply staring array technology to the ship-board infrared search and track (SBIRST) problem. A prime objective is to speed processing time, the previous generation of 360 deg scanners having a refresh rate of only 0.5-1.0 Hz. Another objective is to enhance sensitivity using much longer integration times. An impediment, though, is that if all pixels of resolution angle ∅ were to be viewed simultaneously with dedicated detectors each of width w, the total net length of detector material would then have to be very large: 2πw/∅ = 1.57 m = 60" for 100 μRad resolution and 25 μm detectors. So the application of staring array technology to horizon surveillance needs some form of wide viewing technique involving a combination of asymmetric resolution, reduced resolution, split optics or LOS stepping. The present paper suggests that conventional NEI is not the preferred unit of measure for guiding design choices but that instead a form of BLIP S/N can be both simple and intuitive. This S/N unit of measure is used to compare the two main choices for how to adapt staring technology to the horizon surveillance problem.

Paper Details

Date Published: 30 August 2004
PDF: 12 pages
Proc. SPIE 5406, Infrared Technology and Applications XXX, (30 August 2004); doi: 10.1117/12.541660
Show Author Affiliations
Martin Bitter, Nova Crystals, Inc. (United States)
Z. Pan, Nova Crystals, Inc. (United States)
Sigurgeir Kristjansson, Nova Crystals, Inc. (United States)
Lee Boman, Nova Crystals, Inc. (United States)
Rick Gold, Nova Crystals, Inc. (United States)
Alexandre Pauchard, Nova Crystals, Inc. (United States)

Published in SPIE Proceedings Vol. 5406:
Infrared Technology and Applications XXX
Bjorn F. Andresen; Gabor F. Fulop, Editor(s)

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