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Proceedings Paper

ALOHA project: how nonlinear optics can boost interferometry to propose a new generation of instrument for high-resolution imaging
Author(s): François Reynaud; Pascaline Darré; Ludovic Szemendera; Jean-Thomas Gomes; Ludovic Grossard; Laurent Delage
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Paper Abstract

The ALOHA research program aims to propose a breakthrough generation of instrument for high resolution imaging in astronomy. This fully innovative concept results from our unique skills with a simultaneous competence in nonlinear optics and high resolution imaging with telescope arrays. Acting like a mixer in a radio receiver, the nonlinear process (sum frequency generation) shifts the infrared radiations emitted by the observed astrophysical source to a visible spectral domain. This way, the light beam is more easily processed by mature optical devices and detectors. The compatibility of the nonlinear process with the spatial coherence analysis has been successfully tested through preliminary in lab experiments. Now it’s time to apply this technique in a real astronomical environment. First on-sky results have been observed during the last missions at the CHARA Array.

Paper Details

Date Published: 26 July 2016
PDF: 7 pages
Proc. SPIE 9907, Optical and Infrared Interferometry and Imaging V, 99071A (26 July 2016); doi: 10.1117/12.2232038
Show Author Affiliations
François Reynaud, XLIM Institut de Recherche (France)
Pascaline Darré, XLIM Institut de Recherche (France)
Ludovic Szemendera, XLIM Institut de Recherche (France)
Jean-Thomas Gomes, XLIM Institut de Recherche (France)
Ludovic Grossard, XLIM Institut de Recherche (France)
Laurent Delage, XLIM Institut de Recherche (France)

Published in SPIE Proceedings Vol. 9907:
Optical and Infrared Interferometry and Imaging V
Fabien Malbet; Michelle J. Creech-Eakman; Peter G. Tuthill, Editor(s)

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