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Proceedings Paper

Progress in AOTF hyperspectral imagers
Author(s): Neelam Gupta; Rachid Dahmani; Kelly Bennett; S. Simizu; Dennis R. Suhre; N. B. Singh
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Paper Abstract

Acousto-optic tunable filter (AOTF) based imagers hold great promise for the emergence of the next generation of compact, lightweight, low-cost, programmable hyperspectral imaging systems that can solve the problem of data bottleneck as well as provide polarization signatures for better target detection and identification. At the U.S. Army Research Laboratory, we have been developing such imagers that can operate from the visible to the long infrared wavelengths. Some of these imagers have been used in the laboratory and in the field for the collection of hyperspectral images. During the past year, we have worked on the design of higher sensitivity more compact visible and infrared imagers. We have designed imagers with tellurium dioxide (TeO2) AOTF cells up to 4.5 micrometers and with a thallium arsenic selenide (Tl3AsSe3, TAS) AOTF cell up to 11.5 micrometers . These imagers use focal plane arrays (FPAs)--Si CCD, InGaAs, InSb, and HgCdTe--as needed for the spectral region of interest. In this paper, we will describe the latest advances in our AOTF imager research and present the results obtained from these imagers.

Paper Details

Date Published: 27 July 2000
PDF: 9 pages
Proc. SPIE 4054, Automated Geo-Spatial Image and Data Exploitation, (27 July 2000); doi: 10.1117/12.394104
Show Author Affiliations
Neelam Gupta, Army Research Lab. (United States)
Rachid Dahmani, Army Research Lab. (United States)
Kelly Bennett, Army Research Lab. (United States)
S. Simizu, Advanced Materials Corp. (United States)
Dennis R. Suhre, Carnegie Mellon Research Institute (United States)
N. B. Singh, Northrop Grumman Corp. (United States)

Published in SPIE Proceedings Vol. 4054:
Automated Geo-Spatial Image and Data Exploitation
William E. Roper; Mark K. Hamilton, Editor(s)

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