Performance of a ground and space-based MCT detector stressed at low temperature

Jorge Jiménez; Cristobal Padilla; Antoni Grau

doi:10.1117/12.2629595

29 August 2022 Performance of a ground and space-based MCT detector stressed at low temperature

Jorge Jiménez, Cristobal Padilla, Antoni Grau

Proceedings Volume 12191, X-Ray, Optical, and Infrared Detectors for Astronomy X; 121911T (2022) https://doi.org/10.1117/12.2629595
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Abstract

Large MCT FPA (≥ 2k²) are demanded to satisfy the current scientific needs to cover large portions of the sky in the range of near- and shortwave-infrared wavelength. The European Union has founded the ASTEROID project, a consortium of key research institutions and industrial partners to develop an European MCT FPA of 2k² class in the state of the art of this technology. In order to validate the hybridization reliability of the resulting ASTEROID detector, several setups were developed at IFAE with capabilities to perform thermal cycles while the detector is capturing images. Since the detector prototypes were built with a special pixel configuration forming a "chessboard" with pixels at two levels, the damaged pixels by thermal stress were identified based on their position and signal level using machine vision algorithms. After 30 thermal cycles performed in the range from room temperature (293K) up to 50K, just few damaged pixels were found out before any thermal stress, thus likely damaged during the manufacturing process, being the number of damaged pixels by thermal stress negligible.

Conference Presentation

Citation Download Citation

Jorge Jiménez, Cristobal Padilla, and Antoni Grau "Performance of a ground and space-based MCT detector stressed at low temperature", Proc. SPIE 12191, X-Ray, Optical, and Infrared Detectors for Astronomy X, 121911T (29 August 2022); https://doi.org/10.1117/12.2629595

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