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Proceedings Paper

Cross-dispersion infrared spectrometry (CDIRS) for remote chemical sensing
Author(s): Charles G. Stevens; Paul J. Kuzmenko; William E. Conaway; Frank Magnotta; Norman L. Thomas; Joseph J. Galkowski; Isabella T. Lewis; Terry W. Alger
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Paper Abstract

The advent of high performance infrared detector arrays together with recent advances in coarse grating fabrication now makes possible the design and fabrication of infrared spectrometers that cover the mid-IR atmospheric windows at high resolution with no moving components. For applications involving small sources at large distances this instrument approach can provide a substantial increase in sensitivity over Fourier transform spectrometers at the same resolution and spectral coverage. We describe the design evolution of the LLNL cross dispersive infrared spectrometer (CDIRS) remote chemical sensors operating in the two atmospheric windows from 2.3 microns to 4.2 microns. The spectral and mechanical performance of the first generation 1 meter focal length prototype echelle grating spectrometer (EGS) is presented. A second generation cryogenic (150 K) spectrometer (mini-EGS) utilizes a high dispersion silicon immersion grating to provide a compact design. This instrument will be flown in the winter of 1995 as part of the instrumentation suite for the DOE airborne multisensor pod system (AMPS) effluent research program.

Paper Details

Date Published: 8 September 1995
PDF: 8 pages
Proc. SPIE 2552, Infrared Technology XXI, (8 September 1995); doi: 10.1117/12.218228
Show Author Affiliations
Charles G. Stevens, Lawrence Livermore National Lab. (United States)
Paul J. Kuzmenko, Lawrence Livermore National Lab. (United States)
William E. Conaway, Lawrence Livermore National Lab. (United States)
Frank Magnotta, Lawrence Livermore National Lab. (United States)
Norman L. Thomas, Lawrence Livermore National Lab. (United States)
Joseph J. Galkowski, Lawrence Livermore National Lab. (United States)
Isabella T. Lewis, Lawrence Livermore National Lab. (United States)
Terry W. Alger, Lawrence Livermore National Lab. (United States)

Published in SPIE Proceedings Vol. 2552:
Infrared Technology XXI
Bjorn F. Andresen; Marija Strojnik, Editor(s)

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