Characterization of mid-infrared intersubband detectors for astronomical heterodyne interferometry

Tituan Allain; Mohammadreza Saemian; Carlo Sirtori; Jean-Philippe Berger

doi:10.1117/12.2629173

26 August 2022 Characterization of mid-infrared intersubband detectors for astronomical heterodyne interferometry

Tituan Allain, Mohammadreza Saemian, Carlo Sirtori, Jean-Philippe Berger

Proceedings Volume 12183, Optical and Infrared Interferometry and Imaging VIII; 1218315 (2022) https://doi.org/10.1117/12.2629173
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Abstract

One of the major challenges of mid-infrared astronomical heterodyne interferometry is its sensitivity limitations. Detectors capable of handling several 10 GHz bandwidths have been identified as key building blocks of future instruments. Intersubband detectors based on heterostructures have recently demonstrated their ability to provide such performances. In this work we characterize a Quantum Well Infrared Photodetector in terms of noise, dynamic range and bandwidth in a non-interferometric heterodyne set-up. We discuss the possibility to use them on astronomical systems to measure the beating between the local oscillator and the astronomical signal.

Conference Presentation

Citation Download Citation

Tituan Allain, Mohammadreza Saemian, Carlo Sirtori, and Jean-Philippe Berger "Characterization of mid-infrared intersubband detectors for astronomical heterodyne interferometry", Proc. SPIE 12183, Optical and Infrared Interferometry and Imaging VIII, 1218315 (26 August 2022); https://doi.org/10.1117/12.2629173

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