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Proceedings Paper

Studies of HF(v,J) spatial profiles with a hyperspectral imager
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Paper Abstract

This paper presents results from investigations of mixing flowfields and optical gain profiles in HF chemical laser systems by infrared hyperspectral imaging. A chemiluminescent F + H2 reacting flowfield, produced in a high-fluence microwave-driven reactor, was imaged at a series of wavelengths, 2.6 to 2.9 μm, by a low-order, spectrally scanning Fabry-Perot interferometer mated to an infrared camera. The resulting hyperspectral data cubes define the spectral and spatial distributions of the emission. High-resolution images were processed to determine spatial distributions of the excited state concentrations of the product HF(v,J), as well as spatial distributions of small-signal gain on specific laser transitions. Additional high-resolution Fourier transform spectroscopy and spectral fitting analysis determined detailed excited state distributions in the reacting flowfield. The measurements confirm that our reactor generates inverted populations of HF(v,J).

Paper Details

Date Published: 11 May 2004
PDF: 8 pages
Proc. SPIE 5334, Gas and Chemical Lasers, and Applications III, (11 May 2004); doi: 10.1117/12.537754
Show Author Affiliations
W. Terry Rawlins, Physical Sciences Inc. (United States)
Steven J. Davis, Physical Sciences Inc. (United States)
David B. Oakes, Physical Sciences Inc. (United States)
Daniel X. Hammer, Physical Sciences Inc. (United States)
Gami Maislin, Physical Sciences Inc. (United States)

Published in SPIE Proceedings Vol. 5334:
Gas and Chemical Lasers, and Applications III
Steven J. Davis; Michael C. Heaven, Editor(s)

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