A no-moving-parts UV/visible hyperspectral imager

Neelam Gupta

doi:10.1117/12.517248

27 February 2004 A no-moving-parts UV/visible hyperspectral imager

Neelam Gupta

Proceedings Volume 5268, Chemical and Biological Standoff Detection; (2004) https://doi.org/10.1117/12.517248
Event: Optical Technologies for Industrial, Environmental, and Biological Sensing, 2003, Providence, RI, United States

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.

Citation Download Citation

Neelam Gupta "A no-moving-parts UV/visible hyperspectral imager", Proc. SPIE 5268, Chemical and Biological Standoff Detection, (27 February 2004); https://doi.org/10.1117/12.517248

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