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Proceedings Paper

Tunable snapshot imaging spectrometer
Author(s): Christopher P. Tebow; Eustace L. Dereniak; Dennis Garrood; Terry A. Dorschner; Curtis E. Volin
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Paper Abstract

The acquisition of a multi-spectral data set in a single FPA integration time (snapshot) with no moving parts or scanning is possible with a Computed Tomographic Imaging Spectrometer (CTIS). CTIS instruments employ specially designed computer generated holograms (CGH) etched in an appropriate media for the wavelength band of interest as the dispersing element. The replacement of current etched CGHs with an electronically tunable liquid crystal Optical Phase Array (OPA) extends the capabilities of the CTIS by adding the ability to change its configuration while maintaining its basic motivation as a non-scanning imaging spectrometer with no moving parts. This tunability allows the dispersion, number of diffraction orders, and diffraction efficiency of the orders to be changed affecting the instrument’s spectral resolution, data cube reconstruction quality and speed. This publication presents the results of characterizing the OPA phase vs. applied voltage profile and the feedback algorithm used to program the OPA as a CTIS disperser.

Paper Details

Date Published: 7 January 2004
PDF: 9 pages
Proc. SPIE 5159, Imaging Spectrometry IX, (7 January 2004); doi: 10.1117/12.504792
Show Author Affiliations
Christopher P. Tebow, Optical Sciences Ctr./Univ. of Arizona (United States)
Eustace L. Dereniak, Optical Sciences Ctr./Univ. of Arizona (United States)
Dennis Garrood, Raytheon Missile Systems (United States)
Terry A. Dorschner, Raytheon Network Centric Systems (United States)
Curtis E. Volin, Georgia Tech Research Institute (United States)


Published in SPIE Proceedings Vol. 5159:
Imaging Spectrometry IX
Sylvia S. Shen; Paul E. Lewis, Editor(s)

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