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Proceedings Paper

Reconfigurable liquid crystal dispersing element for a computed tomography imaging spectrometer
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Paper Abstract

A Computed Tomography Imaging Spectrometer (CTIS) is an imaging spectrometer which can acquire a multi-spectral data set in a single snapshot (one focal plane array integration time) with no moving parts. Currently, CTIS instruments use a specially designed computer generated hologram (CGH) to disperse the light from a given spectral band into a grid of diffraction orders. The capabilities of the CTIS instrument can be greatly improved by replacing the static CGH dispersing element with a reconfigurable liquid crystal spatial light modulator. The liquid crystal spatial light modulator is tuned electronically, enabling the CTIS to remain a non-scanning imaging spectrometer with no moving parts. The ability to rapidly reconfigure the dispersing element of the CTIS allows the spectral and spatial resolution to change by varying the number of diffraction orders, diffraction efficiency, etc. In this work, we present the initial results of using a fully addressable, 2-D liquid crystal spatial light modulator as the dispersing element in a CTIS instrument.

Paper Details

Date Published: 16 May 2007
PDF: 9 pages
Proc. SPIE 6565, Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XIII, 65650O (16 May 2007); doi: 10.1117/12.719900
Show Author Affiliations
Corrie Vandervlugt, College of Optical Sciences, Univ. of Arizona (United States)
Hugh Masterson, Boulder Nonlinear Systems, Inc. (United States)
Nathan Hagen, College of Optical Sciences, Univ. of Arizona (United States)
Eustace L. Dereniak, College of Optical Sciences, Univ. of Arizona (United States)


Published in SPIE Proceedings Vol. 6565:
Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XIII
Sylvia S. Shen; Paul E. Lewis, Editor(s)

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