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Thèse en cours

Quanta Image Sensors pour applications spatiales à très bas niveau de lumière

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Auteur / Autrice : Sarah Holloway
Direction : Vincent Goiffon, Cédric Virmontois
Type : Projet de thèse
Discipline(s) : MicroNano Systèmes
Date : Inscription en doctorat le 01/11/2023
Etablissement(s) : Toulouse, ISAE
Ecole(s) doctorale(s) : École doctorale Génie électrique, électronique et télécommunications
Partenaire(s) de recherche : Laboratoire : ISAE-ONERA OLIMPES Optronique, Laser, Imagerie Physique et Environnement Spatial
Equipe de recherche : ISAE/DEOS/GEET Département Electronique Optronique Signal

Résumé

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Low light level detection down to the unique photon is the ultimate challenge to reach for many space applications (e.g. Astronomy, Earth-Observation by night, Detection and Ranging…) and non-space applications: night vision (for defense and commercial applications) , microscopy, life science, medical imaging… Traditional technologies used amplified detectors either photocathodes based devices (Image intensifier tubes, ICMOS, EBCMOS), or solid state devices (SPADs, EMCCD), which are usually operating at high voltages. Moreover, except EMCDD detectors, photocathodes material and SPADs suffer from lower quantum efficiency (QE). The solid-state detectors approach then remains the main target due to their high QE potentiality. Nowadays Quantum Image Sensor (QIS) have been identified as the disruptive technology combining all advantages: small pixels with high fill factor, low voltage operation, accurate photon level detection and counting thanks to its high Charge-to-Voltage conversion Factor (CVF). The purpose of the thesis will be to investigate solution based on Quantum CMOS Image Sensors, QIS or qCMOS, and assess their performance potentialities through dedicated pixel designs. For this purpose, test vehicles will be envisaged on a CMOS Silicon Foundry.