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Proceedings Paper

10-um wavefront spatial filtering: first results with chalcogenide fibers
Author(s): Pascal J. Borde; Guy S. Perrin; Chi Thanh Nguyen; Anne Amy-Klein; Christophe Daussy; Pierre-Yvan Raynal; Alain M. Leger; Gwenael Maze
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Paper Abstract

Wavefront cleaning by single-mode fibers has proved to be efficient in optical-infrared interferometry to improve calibration quality. For instance, the FLUOR instrument has demonstrated the capability of fluoride glass single-mode fibers in this respect in the K and L bands. New interferometric instruments developed for the mid-infrared require the same capability for the 8-12 μm range. We have initiated a program to develop single-mode fibers in the prospect of the VLTI mid-infrared instrument MIDI and of the ESA/DARWIN and NASA/TPF missions that require excellent wavefront quality. In order to characterize the performances of chalcogenide fibers we are developing, we have set up an experiment to measure the far-field pattern radiated at 10 μm. In this paper, we report the first and promising results obtained with this new component.

Paper Details

Date Published: 21 February 2003
PDF: 7 pages
Proc. SPIE 4838, Interferometry for Optical Astronomy II, (21 February 2003); doi: 10.1117/12.459756
Show Author Affiliations
Pascal J. Borde, Observatoire de Paris-Meudon (France)
Guy S. Perrin, Observatoire de Paris-Meudon (France)
Chi Thanh Nguyen, Lab. De Physique des Lasers/Univ. Paris-Nord (France)
Anne Amy-Klein, Lab. De Physique des Lasers/Univ. Paris-Nord (France)
Christophe Daussy, Lab. De Physique des Lasers/Univ. Paris-Nord (France)
Pierre-Yvan Raynal, Institut d'Astrophysique Spatiale/Univ. Paris-Sud (France)
Alain M. Leger, Institut d'Astrophysique Spatiale/Univ. Paris-Sud (France)
Gwenael Maze, Le Verre Fluore SA (France)

Published in SPIE Proceedings Vol. 4838:
Interferometry for Optical Astronomy II
Wesley A. Traub, Editor(s)

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