ALOHA project: how nonlinear optics can boost interferometry to propose a new generation of instrument for high-resolution imaging

François Reynaud; Pascaline Darré; Ludovic Szemendera; Jean-Thomas Gomes; Ludovic Grossard; Laurent Delage

doi:10.1117/12.2232038

26 July 2016 ALOHA project: how nonlinear optics can boost interferometry to propose a new generation of instrument for high-resolution imaging

François Reynaud, Pascaline Darré, Ludovic Szemendera, Jean-Thomas Gomes, Ludovic Grossard, Laurent Delage

Author Affiliations +

Proceedings Volume 9907, Optical and Infrared Interferometry and Imaging V; 99071A (2016) https://doi.org/10.1117/12.2232038
Event: SPIE Astronomical Telescopes + Instrumentation, 2016, Edinburgh, United Kingdom

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.

Citation Download Citation

François Reynaud, Pascaline Darré, Ludovic Szemendera, Jean-Thomas Gomes, Ludovic Grossard, and Laurent Delage "ALOHA project: how nonlinear optics can boost interferometry to propose a new generation of instrument for high-resolution imaging", Proc. SPIE 9907, Optical and Infrared Interferometry and Imaging V, 99071A (26 July 2016); https://doi.org/10.1117/12.2232038

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