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Proceedings Paper

Optical Design Of The ATMOS Fourier Transform Spectrometer
Author(s): Irving R. Abel; Bruce R. Reynolds; J. B. Breckinridge; J. Pritchard
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Paper Abstract

The optical system design of the ATMOS Fourier transform spectrometer to be operated from SpaceLab for the measurement of stratospheric trace molecules contains features which enable it to achieve the required fringe contrast of 80% and spectral resolution of .02 cm-1 (apodized) over a spectral range of 2-16 µm. In particular, the design for high performance and stability is based on the following key features, which alleviate to a substantial degree the usual requirements for alignment precision: 1. "cat's eye" mirror configuration in the two arms of the interferometer for retroreflection stability. 2. tilt-compensated system of beamsplitter, compensator and fold mirrors for wavefront directional stability. 3. paraboloidal "cat's eye" primary mirror for wavefront stability against shear. 4. rotable compensator for matching chromatic dispersion. 5. wedged refractive components to avoid channel spectra due to the Fabry-Perot effect.

Paper Details

Date Published: 29 November 1979
PDF: 15 pages
Proc. SPIE 0193, Optical Systems in Engineering I, (29 November 1979); doi: 10.1117/12.957867
Show Author Affiliations
Irving R. Abel, Electro-Optics Center (United States)
Bruce R. Reynolds, Electro-Optics Center (United States)
J. B. Breckinridge, California Institute of Technology (United States)
J. Pritchard, Idealab, Inc. (United States)

Published in SPIE Proceedings Vol. 0193:
Optical Systems in Engineering I
Paul R. Yoder, Editor(s)

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