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Curved detectors developments and characterization: application to astronomical instruments

Lombardo, Simona and Behaghel, Thibault and Chambion, Bertrand and Jahn, Wilfried and Hugot, Emmanuel and Muslimov, Eduard and Roulet, Melanie and Ferrari, Marc and Gaschet, Christophe and Caplet, Stéphane and Henry, David (2018) Curved detectors developments and characterization: application to astronomical instruments. In: High Energy, Optical, and Infrared Detectors for Astronomy VIII. Proceedings of SPIE. No.10709. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 107090U . ISBN 9781510619715.

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Many astronomical optical systems have the disadvantage of generating curved focal planes requiring flattening optical elements to project the corrected image on at detectors. The use of these designs in combination with a classical at sensor implies an overall degradation of throughput and system performances to obtain the proper corrected image. With the recent development of curved sensor this can be avoided. This new technology has been gathering more and more attention from a very broad community, as the potential applications are multiple: from low-cost commercial to high impact scientific systems, to mass-market and on board cameras, defense and security, and astronomical community. We describe here the first concave curved CMOS detector developed within a collaboration between CNRS- LAM and CEA-LETI. This fully-functional detector 20 Mpix (CMOSIS CMV20000) has been curved down to a radius of R_c =150mm over a size of 24x32mm^2. We present here the methodology adopted for its characterization and describe in detail all the results obtained. We also discuss the main components of noise, such as the readout noise, the fixed pattern noise and the dark current. Finally we provide a comparison with the at version of the same sensor in order to establish the impact of the curving process on the main characteristics of the sensor.

Item Type:Book Section
Related URLs:
URLURL TypeDescription
Lombardo, Simona0000-0002-2161-8104
Hugot, Emmanuel0000-0002-5879-6318
Muslimov, Eduard0000-0002-3242-9894
Henry, David0000-0002-5201-0644
Additional Information:© 2018 Society of Photo-Optical Instrumentation Engineers (SPIE). The authors acknowledge the support of the European Research council through the H2020 - ERC-STG-2015 678777 ICARUS program. This activity was partially funded by the French Research Agency (ANR) through the LabEx FOCUS ANR-11-LABX-0013.
Funding AgencyGrant Number
European Research Council (ERC)678777
Agence Nationale pour la Recherche (ANR)ANR-11-LABX-0013
Subject Keywords:CMOS, curved detector, characterization, noise properties, dark current
Series Name:Proceedings of SPIE
Issue or Number:10709
Record Number:CaltechAUTHORS:20181207-145745524
Persistent URL:
Official Citation:Simona Lombardo, Thibault Behaghel, Bertrand Chambion, Wilfried Jahn, Emmanuel Hugot, Eduard Muslimov, Melanie Roulet, Marc Ferrari, Christophe Gaschet, Stéphane Caplet, David Henry, "Curved detectors developments and characterization: application to astronomical instruments," Proc. SPIE 10709, High Energy, Optical, and Infrared Detectors for Astronomy VIII, 107090U (20 July 2018); doi: 10.1117/12.2312654
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:91585
Deposited By: George Porter
Deposited On:07 Dec 2018 23:45
Last Modified:16 Nov 2021 03:42

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