MTF performance: measurements, modelisation, and optimization for Sofradir  II-VI IR photodetectors

Jocelyn Berthoz; Laurent Rubaldo; Magalie Maillard; Rachid Taalat; Romain Grille; Nicolas Péré-Laperne; Alexandre Kerlain; Alexandre Ferron; Olivier Gravrand

doi:10.1117/12.2075670

8 February 2015 MTF performance: measurements, modelisation, and optimization for Sofradir II-VI IR photodetectors

Jocelyn Berthoz, Laurent Rubaldo, Magalie Maillard, Rachid Taalat, Romain Grille, Nicolas Péré-Laperne, Alexandre Kerlain, Alexandre Ferron, Olivier Gravrand

Author Affiliations +

Proceedings Volume 9370, Quantum Sensing and Nanophotonic Devices XII; 93700O (2015) https://doi.org/10.1117/12.2075670
Event: SPIE OPTO, 2015, San Francisco, California, United States

Abstract

SOFRADIR is widely present on the IR detector market for high-performance space, military and security applications thanks to a well mastered Mercury Cadmium Telluride (MCT) technology, and to the recent acquisition of the III-V InSb, InGaAs, and QWIP technologies. As a result, strong and continuous development efforts are deployed to deliver cutting edge products with improved performances in terms of sensitivity, spatial and thermal resolution. The actual trend in quantum IR detector development is the design of very small pixel, with high operating temperature. The selfconfinement of neighboring diodes may not be efficient enough to maintain optimal modulation transfert function (MTF). This paper presents the recent developments achieved in Sofradir in terms of MTF measurements protocol challenged by the pitch reduction. An overview of state of the art MTF results with optimized measurement technic will be shown, from SWIR to VLWIR MCT focal plane. In order to optimize device performances and reduce development cycle time, this experimental approach has been coupled with finite elements modelisation (FEM). Optimized MTF results for 10μm pitch and HOT MCT technology will be exposed.

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Jocelyn Berthoz, Laurent Rubaldo, Magalie Maillard, Rachid Taalat, Romain Grille, Nicolas Péré-Laperne, Alexandre Kerlain, Alexandre Ferron, and Olivier Gravrand "MTF performance: measurements, modelisation, and optimization for Sofradir II-VI IR photodetectors", Proc. SPIE 9370, Quantum Sensing and Nanophotonic Devices XII, 93700O (8 February 2015); https://doi.org/10.1117/12.2075670

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