Fabrication and characterization of a high performance NIR 2kx2k MCT array at CEA and Lynred for astronomy applications

Olivier Gravrand; Clément Lobre; Jean-Louis Santailler; Titouan Legoff; Nicolas Baier; Giacomo Badano; Olivier Boulade; Thibault Pichon; Alix Nouvel-Delaflèche; Diane Sam Giao; Alexandre Maltere; Sébastien Aufranc; Frédéric Salvetti; Julien Roumegoux; Benoit Brosse; Adrien Lamoure

doi:10.1117/12.2618857

27 May 2022 Fabrication and characterization of a high performance NIR 2kx2k MCT array at CEA and Lynred for astronomy applications

Olivier Gravrand, Clément Lobre, Jean-Louis Santailler, Titouan Legoff, Nicolas Baier, Giacomo Badano, Olivier Boulade, Thibault Pichon, Alix Nouvel-Delaflèche, Diane Sam Giao, Alexandre Maltere, Sébastien Aufranc, Frédéric Salvetti, Julien Roumegoux, Benoit Brosse, Adrien Lamoure

Author Affiliations +

Proceedings Volume 12107, Infrared Technology and Applications XLVIII; 1210706 (2022) https://doi.org/10.1117/12.2618857
Event: SPIE Defense + Commercial Sensing, 2022, Orlando, Florida, United States

Abstract

For several years now, LYNRED, CEA-LETI and CEA-IRFU have been involved in the development of large area, very high performance NIR retinas for astronomy, in the context of the ALFA program (Astronomical Large Format Array). It aims at demonstrating the ability to produce in Europe low flux 2kx2k arrays exhibiting the very high performances required by science applications. In this context, high performance means very low dark current (below 0.1 e/s/px) with high QE (above 80%). LETI and LYNRED succeeded this year in the fabrication of a 2kx2k array, with very high uniformity as characterized at IRFU. One of those arrays will be used on the CAGIRE camera of the SVOM mission, aiming at observing afterglows of gamma ray bursts. Additional studies are ongoing on test arrays manufactured with the same technology to assess the behavior of this technology in terms of persistence and radiation hardness for space use.

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Olivier Gravrand, Clément Lobre, Jean-Louis Santailler, Titouan Legoff, Nicolas Baier, Giacomo Badano, Olivier Boulade, Thibault Pichon, Alix Nouvel-Delaflèche, Diane Sam Giao, Alexandre Maltere, Sébastien Aufranc, Frédéric Salvetti, Julien Roumegoux, Benoit Brosse, and Adrien Lamoure "Fabrication and characterization of a high performance NIR 2kx2k MCT array at CEA and Lynred for astronomy applications", Proc. SPIE 12107, Infrared Technology and Applications XLVIII, 1210706 (27 May 2022); https://doi.org/10.1117/12.2618857

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