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Proceedings Paper

Spaceflight-qualified tunable cryogenic infrared Fabry-Perot etalon
Author(s): Michael Thomas Dehring; Scott Lindemann; Carl A. Nardell; Paul B. Hays; Jinxue Wang; William Cook
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Paper Abstract

Though a Phase I and II NASA SBIR initiative Michigan Aerospace Corp. has demonstrated a spaceflight qualified, tunable infrared Fabry Perot etalon. The design included use of single crystal ferroelectric actuators for tuning the etalon gap. The operational wavelength range of this etalon was designed for 10-14μm and utilized Zinc-Selenide for the plate substrate with a plate reflectivity of 0.8. At a temperature of 193 K and 0.4 milli-torr, the etalon achieved a finesse of 11.8, a bandpass of 1.23 nm and had a free-spectral range of 14.2 nm at the test wavelength of 10.013 μm. At this temperature, the etalon was tunable over ~8.5 free-spectral ranges, or 45 μm in gap spacing. Testing concluded that the etalon will retain 57% of its total dynamic range at a temperature of 75 K compared to its dynamic range at room temperature. The design was qualified for a Delta-II launch vehicle vibration specification.

Paper Details

Date Published: 4 November 2004
PDF: 9 pages
Proc. SPIE 5543, Infrared Spaceborne Remote Sensing XII, (4 November 2004); doi: 10.1117/12.560585
Show Author Affiliations
Michael Thomas Dehring, Michigan Aerospace Corp. (United States)
Scott Lindemann, Michigan Aerospace Corp. (United States)
Carl A. Nardell, Raytheon Santa Barbara Remote Sensing (United States)
Paul B. Hays, Michigan Aerospace Corp. (United States)
Jinxue Wang, Raytheon Santa Barbara Remote Sensing (United States)
William Cook, NASA Langley Research Ctr. (United States)

Published in SPIE Proceedings Vol. 5543:
Infrared Spaceborne Remote Sensing XII
Marija Strojnik, Editor(s)

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