26 January 2018 Sofradir vertical industrial model for high-image-quality MCT detectors
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Abstract
SOFRADIR is the worldwide leader on the cooled IR detector market for high-performance space, military and security applications thanks to a well mastered Mercury Cadmium Telluride (MCT) technology, and recently thanks to the acquisition of III-V technology: InSb, InGaAs, and QWIP quantum detectors. This is the result of strong and continuous development efforts to deliver cutting edge products with improved performances in terms of spatial and thermal resolution, dark current, quantum efficiency, low excess noise and high operability. On one hand the advanced performances of Sofradir product rely on a strong partnership with CEA-LETI materialized in a common laboratory named DEFIR. On the other hand, these cutting edge performances are made possible thanks to Sofradir vertical industrial model. From the CdZnTe (CZT) and HgCdTe (MCT) crystal growth to the last electro-optical characterization recipe before shipping, and all the intermediate steps in between like IDDCA (Integrated Detector Dewar Cooler Assembly) final pumping cycle, all the manufacturing steps are developed, performed and controlled inhouse. This allows direct feedback between IDDCA, system performances and process or material. State of the art relevant performances for IR detection and imaging will be presented, that is to say low excess noise defects, RFPN (Residual Fixed Pattern Noise), NUC (Non Uniformity Correction) table stability for Daphnis product, 10μm pitch XGA extended MW matrix at 110K and HOT (High Operating Temperature) p-on-n technology, VGA format with 15μm pitch MW at 160K.
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Laurent Rubaldo, Laurent Rubaldo, Pierre Guinedor, Pierre Guinedor, Alexandre Brunner, Alexandre Brunner, Vincent Destefanis, Vincent Destefanis, Paul Fougères, Paul Fougères, Armelle Kapferer, Armelle Kapferer, D. Sam-Giao, D. Sam-Giao, L. Dargent, L. Dargent, Alexandre Kerlain, Alexandre Kerlain, Augustin Cathignol, Augustin Cathignol, Valery Compain, Valery Compain, François Boulard, François Boulard, Delphine Brellier, Delphine Brellier, Olivier Gravrand, Olivier Gravrand, } "Sofradir vertical industrial model for high-image-quality MCT detectors", Proc. SPIE 10540, Quantum Sensing and Nano Electronics and Photonics XV, 105400I (26 January 2018); doi: 10.1117/12.2300392; https://doi.org/10.1117/12.2300392
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