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Optimization of a triple etalon interferometerThe High Resolution Doppler Image (HRDI) is a triple etalon Fabry-Perot interferometer designed to measure Doppler shifts of rotational lines in the O2 atmospheric system from the Upper Atmosphere Research Satellite. These shifts are used to determine wind vectors in the stratosphere and mesosphere. This paper presents the techniques used to determine the gap thicknesses and reflectivities of the three etalons of the HRDI instrument. The spacings are found to be 1.000, 0.186, and 0.025 cm. These spacings are independent of the reflectivity of the etalons. The reflectivities of the three etalons should be nearly equal to minimize the errors in the wind measurement caused by mistuning of the etalons. The choice of the reflectivity does not strongly influence the statistical error in the wind error when the values are less than about 0.90.
Document ID
19870061167
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Skinner, Wilbert R.
(Michigan Univ. Ann Arbor, MI, United States)
Hays, Paul B.
(Michigan Univ. Ann Arbor, MI, United States)
Abreu, Vincent J.
(Michigan, University Ann Arbor, United States)
Date Acquired
August 13, 2013
Publication Date
July 15, 1987
Publication Information
Publication: Applied Optics
Volume: 26
ISSN: 0003-6935
Subject Category
Instrumentation And Photography
Accession Number
87A48441
Funding Number(s)
CONTRACT_GRANT: NAS5-27751
Distribution Limits
Public
Copyright
Other

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