Laboratory characterization of SLS-based infrared detectors for precision photometry

Aaron Peterson-Greenberg; Michael D. Pavel

doi:10.1117/12.2313990

20 July 2018 Laboratory characterization of SLS-based infrared detectors for precision photometry

Aaron Peterson-Greenberg, Michael D. Pavel

Proceedings Volume 10709, High Energy, Optical, and Infrared Detectors for Astronomy VIII; 107092C (2018) https://doi.org/10.1117/12.2313990
Event: SPIE Astronomical Telescopes + Instrumentation, 2018, Austin, Texas, United States

Abstract

Strained layer superlattice (SLS) detectors are a new class of infrared detectors available in the scientific and commercial markets. The photosensitive bandpass is set by material and engineered properties with typical detectors covering 7.5-10.5 microns, bluer than traditional N-band filters. SLS detectors have the potential to reach lower dark current than traditional infrared materials (like HgCdTe) allowing comparable photometric sensitivity at higher detector temperatures, easing cooling requirements. Conversely, at equal cryogenic temperatures the SLS detector will have lower dark current than HgCdTe allowing better photometric sensitivity under dark current limited operation. This work presents laboratory measurements of SLS detectors to quantify detector linearity and time stability. The potential advantages in using SLS-based detectors in future astronomical instruments is also discussed.

Citation Download Citation

Aaron Peterson-Greenberg and Michael D. Pavel "Laboratory characterization of SLS-based infrared detectors for precision photometry", Proc. SPIE 10709, High Energy, Optical, and Infrared Detectors for Astronomy VIII, 107092C (20 July 2018); https://doi.org/10.1117/12.2313990

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KEYWORDS

Sensors

Infrared sensors

Infrared detectors

Calibration

Black bodies

Infrared radiation

Mercury cadmium telluride

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