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Proceedings Paper

Laboratory experiments on fringe-pattern acquisition and stabilization
Author(s): Luc Dame; Denis Beal; Beatrice Sorrente; Eric Prieto
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Paper Abstract

We report preliminary results on fringe pattern acquisition and stabilization as performed on a Mach- Zehnder set up representative of Stellar Interferometry needs. The system algorithm is based on "white light" fringe tracking controlled from a reference interferometer synchronous detection (central fringe locked interferometry). This servo-system drives a simple two-stages delay line for real time compensation of the optical path delays either due to atmospheric or instrumental errors. Contrasts (nonoptimized) of 70 % on the stabilized fringe pattern were measured, strongly encouraging to pursue the development of the technique.

Paper Details

Date Published: 1 August 1990
PDF: 8 pages
Proc. SPIE 1237, Amplitude and Intensity Spatial Interferometry, (1 August 1990); doi: 10.1117/12.19336
Show Author Affiliations
Luc Dame, ONERA (France)
Denis Beal, ONERA (France)
Beatrice Sorrente, ONERA (France)
Eric Prieto, ONERA (France)

Published in SPIE Proceedings Vol. 1237:
Amplitude and Intensity Spatial Interferometry
James B. Breckinridge, Editor(s)

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