Share Email Print

Proceedings Paper

Cryogenic Michelson Interferometer Spectrometer For Space Shuttle Application
Author(s): John C. Kemp; Stanley J. Wellard; Donn C. Goode; E. Ray Huppi
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

A Michelson interferometer spectrometer using a flexural pivot suspension for the moving mirror was fabricated for use at 20° K as part of the CIRRIS 1A experiment. The spectral range 2.5 to 25 μm is achieved using a potassium bromide beamsplitter. The softness of the beamsplitter material required special mounting care to preserve beamsplitter flatness while undergoing the strain of being cooled and the shock and vibration of the shuttle launch. Five various sized elements in the arsenic-doped-silicon focal plane provide for tradeoff of sensitivity, spatial and spectral resolution capabilities. A redundant position reference system uses optical fibers to couple optical power from HeNe lasers through the vacuum/cryogenic interface into the interferometer optics where it travels antiparallel to the infrared signal. An alignment system using geared stepper motors provides capability of realignment in space. An eight-position filter wheel is used to enhance the out-of-band signal rejection to enhance high sensitivity in the presence of strong infrared emitters. The interferometer is mounted inside of a high-off-axis rejection telescope to enable measurement of the earth limb emissions. The telescope is cooled to 20° K using supercritical liquid helium.

Paper Details

Date Published: 6 November 1986
PDF: 9 pages
Proc. SPIE 0686, Infrared Detectors, Sensors, and Focal Plane Arrays, (6 November 1986); doi: 10.1117/12.936538
Show Author Affiliations
John C. Kemp, Utah State University (United States)
Stanley J. Wellard, Utah State University (United States)
Donn C. Goode, Utah State University (United States)
E. Ray Huppi, Air Force Geophysics Laboratory (United States)

Published in SPIE Proceedings Vol. 0686:
Infrared Detectors, Sensors, and Focal Plane Arrays
Hideyoshi Nakamura, Editor(s)

© SPIE. Terms of Use
Back to Top