Early characterisation of a sub-electron readout noise near-infrared large format detector based on MCT avalanche photodiodes

Thibaut Prod'homme; Conor Robinson; Erik Ryman; Frederic Lemmel; Sander Blommaert; Ivo Visser; Luc Boucher

doi:10.1117/12.3018137

28 August 2024 Early characterisation of a sub-electron readout noise near-infrared large format detector based on MCT avalanche photodiodes

Thibaut Prod'homme, Conor Robinson, Erik Ryman, Frederic Lemmel, Sander Blommaert, Ivo Visser, Luc Boucher

Author Affiliations +

Proceedings Volume PC13103, X-Ray, Optical, and Infrared Detectors for Astronomy XI; PC1310302 (2024) https://doi.org/10.1117/12.3018137
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Abstract

ESA’s Science Payload Validation laboratory is characterising Leonardo’s IBEX detector. IBEX is new 2kx2k pixels MCT-hybridised detector that relies on avalanche photo-diode to provide effective sub-electron readout noise capabilities and low enough dark current compatible with long integration duration typical of photon-starved astronomy applications. In this contribution, we provide first an overview of the packaging solution and test setups including our custom readout chain and prototype controller. We then report on functional and performance test results for a bare-ROIC as well as early dark current performance for the hybridised arrays.

Conference Presentation

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Thibaut Prod'homme, Conor Robinson, Erik Ryman, Frederic Lemmel, Sander Blommaert, Ivo Visser, and Luc Boucher "Early characterisation of a sub-electron readout noise near-infrared large format detector based on MCT avalanche photodiodes", Proc. SPIE PC13103, X-Ray, Optical, and Infrared Detectors for Astronomy XI, PC1310302 (28 August 2024); https://doi.org/10.1117/12.3018137

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