Optical Design Of The ATMOS Fourier Transform Spectrometer

Irving R. Abel; Bruce R. Reynolds; J. B. Breckinridge; J. Pritchard

doi:10.1117/12.957867

29 November 1979 Optical Design Of The ATMOS Fourier Transform Spectrometer

Irving R. Abel, Bruce R. Reynolds, J. B. Breckinridge, J. Pritchard

Proceedings Volume 0193, Optical Systems in Engineering I; (1979) https://doi.org/10.1117/12.957867
Event: 23rd Annual Technical Symposium, 1979, San Diego, United States

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.

Citation Download Citation

Irving R. Abel, Bruce R. Reynolds, J. B. Breckinridge, and J. Pritchard "Optical Design Of The ATMOS Fourier Transform Spectrometer", Proc. SPIE 0193, Optical Systems in Engineering I, (29 November 1979); https://doi.org/10.1117/12.957867

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