Study of new types of detectors in the SWIR: extension of the operating band beyond 1.7μm

Jordi Roubichou; Jean-Luc Reverchon; Axel Evirgen; Claire Theveneau; Vincent Gueriaux; Gerard Berginc; Jean-Luc Gach; Jean-Luc Beuzit

doi:10.1117/12.3013378

27 August 2024 Study of new types of detectors in the SWIR: extension of the operating band beyond 1.7μm

Jordi Roubichou, Jean-Luc Reverchon, Axel Evirgen, Claire Theveneau, Vincent Gueriaux, Gerard Berginc, Jean-Luc Gach, Jean-Luc Beuzit

Author Affiliations +

Proceedings Volume 13103, X-Ray, Optical, and Infrared Detectors for Astronomy XI; 1310319 (2024) https://doi.org/10.1117/12.3013378
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

In recent years, an interest in the detection of the ShortWave Infra-Red (SWIR) band has grown. On the ground, the development of telescopes (ELTs) requires the construction of large focal planes in the SWIR for imaging, spectroscopy, or wavefront sensing applications. In space, the SWIR band can have many applications whether for communications or for imaging space and earth. The state-of-the-art III-V detectors in the SWIR are InGaAs photodiodes on InP substrate that are limited by a 1.7μm cut-off wavelength. Superlattice (SL) based detectors, that have been increasingly studied in recent years, make it possible to reach new cut-off wavelengths. Starting from the InGaAs on InP detector technology that has been mastered for more than ten years by THALES, the III-V Lab we propose to extend the detection range beyond 1.7μm by introducing a SL in the active region of an InGaAs photodiode. We will present the results obtained up to 2.6μm, as well as the solutions implemented to limit the carrier localization in the superlattice and the associated QE degradation. We will also discuss the consequence of minority carrier lifetime on the performance and the consequence of localization on MTF.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

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Jordi Roubichou, Jean-Luc Reverchon, Axel Evirgen, Claire Theveneau, Vincent Gueriaux, Gerard Berginc, Jean-Luc Gach, and Jean-Luc Beuzit "Study of new types of detectors in the SWIR: extension of the operating band beyond 1.7μm", Proc. SPIE 13103, X-Ray, Optical, and Infrared Detectors for Astronomy XI, 1310319 (27 August 2024); https://doi.org/10.1117/12.3013378

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