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Proceedings Paper

Fiber coupled heterodyne interferometric displacement sensor
Author(s): Noble M. Nerheim
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Paper Abstract

Space-based interferometers and large segmented reflectors will require precision metrology with nanometer accuracy for active control systems. This paper summarizes an experimental study of an optical heterodyne interferometer with resolution of about 3 nm. Optical signals are carried to and from the interferometer by optical fibers to avoid thermally loading the reflector panels. Heterodyne detection provides far greater precision than does traditional interferometry.

Paper Details

Date Published: 1 December 1991
PDF: 11 pages
Proc. SPIE 1542, Active and Adaptive Optical Systems, (1 December 1991); doi: 10.1117/12.48835
Show Author Affiliations
Noble M. Nerheim, Jet Propulsion Lab. (United States)

Published in SPIE Proceedings Vol. 1542:
Active and Adaptive Optical Systems
Mark A. Ealey, Editor(s)

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