Laboratory experiments on fringe-pattern acquisition and stabilization

Luc Dame; Denis Beal; Beatrice Sorrente; Eric Prieto

doi:10.1117/12.19336

1 August 1990 Laboratory experiments on fringe-pattern acquisition and stabilization

Luc Dame, Denis Beal, Beatrice Sorrente, Eric Prieto

Proceedings Volume 1237, Amplitude and Intensity Spatial Interferometry; (1990) https://doi.org/10.1117/12.19336
Event: SPIE Astronomical Telescopes and Instrumentation for the 21st Century, 1990, Tucson, AZ, United States

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.

Citation Download Citation

Luc Dame, Denis Beal, Beatrice Sorrente, and Eric Prieto "Laboratory experiments on fringe-pattern acquisition and stabilization", Proc. SPIE 1237, Amplitude and Intensity Spatial Interferometry, (1 August 1990); https://doi.org/10.1117/12.19336

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