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Title: |
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10-μm wavefront spatial filtering:
first results with chalcogenide fibers |
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Authors: |
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Borde, Pascal J.; Perrin, Guy S.; Nguyen, Chi T.; Amy-Klein, Anne; Daussy, Christophe; Raynal, Pierre-Yvan; Leger, Alain M.; Maze, Gwenael |
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Affiliation: |
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AA(Observatoire de Paris-Meudon (France)), AB(Observatoire de Paris-Meudon (France)), AC(Lab. De Physique des Lasers/Univ. Paris-Nord (France)), AD(Lab. De Physique des Lasers/Univ. Paris-Nord (France)), AE(Lab. De Physique des Lasers/Univ. Paris-Nord (France)), AF(Institut d'Astrophysique Spatiale/Univ. Paris-Sud (France)), AG(Institut d'Astrophysique Spatiale/Univ. Paris-Sud (France)), AH(Le Verre Fluore SA (France)) |
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Journal: |
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Interferometry for Optical Astronomy II. Edited by Wesley A. Traub. Proceedings of the SPIE, Volume 4838, pp. 273-279 (2003). (SPIE Homepage) |
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Publication Date: |
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02/2003 |
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Origin: |
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SPIE |
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Abstract
Copyright: |
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(c) 2003:
SPIE--The International Society for Optical Engineering. Downloading of the
abstract is permitted for personal use only. |
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Bibliographic Code: |
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2003SPIE.4838..273B |
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.