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Proceedings Paper

Progress on characterization of a dualband IR imaging spectrometer
Author(s): Brian P. Beecken; Paul D. LeVan; Cory Lindh; Randall S. Johnson
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Paper Abstract

A dualband infrared focal plane array is the central component of a compact, low mass, multispectral imaging spectrometer with perfect spectral registration. The prototype spectrometer design uses a grating blaze chosen to be efficient over both 3.75-6.05 and 7.5-12.1 μm, although the mercury cadmium telluride focal plane array limits the bandwidths with cutoff wavelengths near 5.2 and 10.5 μm. The spectrometer has been spectrally calibrated with flooded blackbody illumination and offset and gain corrections have been performed. The wavelength resolution is ±0.024 μm in the MWIR and ±0.083 μm in the LWIR, however this limitation is caused by the calibration method and not by the design. The potential for determining the temperature of a blackbody or greybody from the ratio of two narrow wavebands has been demonstrated.

Paper Details

Date Published: 16 April 2008
PDF: 9 pages
Proc. SPIE 6940, Infrared Technology and Applications XXXIV, 69401R (16 April 2008); doi: 10.1117/12.778017
Show Author Affiliations
Brian P. Beecken, Bethel Univ. (United States)
Paul D. LeVan, Air Force Research Lab. (United States)
Cory Lindh, Bethel Univ. (United States)
Randall S. Johnson, Bethel Univ. (United States)

Published in SPIE Proceedings Vol. 6940:
Infrared Technology and Applications XXXIV
Bjørn F. Andresen; Gabor F. Fulop; Paul R. Norton, Editor(s)

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