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Proceedings Paper

A no-moving-parts UV/visible hyperspectral imager
Author(s): Neelam Gupta
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Paper Abstract

The US Army Research Laboratory has developed a no-moving-parts, random wavelength access hyperspectral images using an electronically tunable acousto-optic tunable filter (AOTF) as a programmable dispersive element in combination with a camera and appropriate optics covering the wavelength region from the wavelength region from the ultraviolet (UV) to the visible (VIS). The imager operates from 220 to 480 nm with a spectral resolution of 160 cm-1/ Sicj an UV imager can be used for a variety of chem/bio detection applications including monitoring of ozone in the atmosphere as well as in fluorescence microscopy to differentiate between normal and cancerous tissues for medical diagnosis. A novel large aperture AOTF was fabricated for this imager using a large single crystal of potassium dihydrophosphate (KH2PO4) commonly known as KPD. In the hyperspectral imager this AOTF is used with an uncooled enhanced charge couple device camera (CCD). In this paper, we will describe the AOTF cell, the imager, and present results from our imaging experiments.

Paper Details

Date Published: 27 February 2004
PDF: 7 pages
Proc. SPIE 5268, Chemical and Biological Standoff Detection, (27 February 2004); doi: 10.1117/12.517248
Show Author Affiliations
Neelam Gupta, U.S. Army Research Lab. (United States)

Published in SPIE Proceedings Vol. 5268:
Chemical and Biological Standoff Detection
James O. Jensen; Jean-Marc Theriault, Editor(s)

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