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Proceedings Paper

Development of astronomy large focal plane array "ALFA" at Sofradir and CEA
Author(s): B. Fièque; A. Lamoure; F. Salvetti; S. Aufranc; O. Gravrand; G. Badano; O. Boulade; S. Mouzali; S. Basa
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Paper Abstract

CEA and Sofradir have been involved for 7 years in studies related to a large format detector development for science and astronomy applications. These studies are linked with ESA's Near Infrared Large Format Sensor Array roadmap which aims to develop a 2Kx2K large format low flux low noise device. The ALFA (Astronomical Large Focal plane Array) detector is currently at design, manufacturing and validation phase at CEA and Sofradir. This paper will present the very last achievements of the ALFA development with a specific focus on the readout integrated circuit design itself. Features and specification of the 2048x2048 15μm pitch with Source Follower Detector (SFD) input stage will be described. Apart from ESA development, European Commission is also contributing to the large detector development thanks to ASTEROID (AStronomical TEchnology EuROpean Infrared detector Development) program founded by REA (Research European Agency). ASTEROID main objectives are to develop very large raw materials (CdZnTe substrate, HgCdTe epilayer…) compatible with the manufacturing of very large detectors in volume keeping the same level of performance. Organization and status of this program will be presented where high synergy with 2K² ALFA detector are included.

Paper Details

Date Published: 6 July 2018
PDF: 19 pages
Proc. SPIE 10709, High Energy, Optical, and Infrared Detectors for Astronomy VIII, 1070905 (6 July 2018); doi: 10.1117/12.2311713
Show Author Affiliations
B. Fièque, SOFRADIR (France)
A. Lamoure, SOFRADIR (France)
F. Salvetti, SOFRADIR (France)
S. Aufranc, SOFRADIR (France)
O. Gravrand, CEA-LETI (France)
G. Badano, CEA-LETI (France)
O. Boulade, CEA-IRFU (France)
S. Mouzali, CEA-IRFU (France)
S. Basa, Aix Marseille Univ, CNRS, CNES, Laboratoire d'Astrophysique de Marseille (France)

Published in SPIE Proceedings Vol. 10709:
High Energy, Optical, and Infrared Detectors for Astronomy VIII
Andrew D. Holland; James Beletic, Editor(s)

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