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6 July 2018 Observatory deployment and characterization of SAPHIRA HgCdTe APD arrays
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Abstract
We present results from several years of laboratory characterization and telescope deployment of the near infrared (NIR) avalanche photodiode (APD) array SAPHIRA from Leonardo S.p.A. Dark current has fallen by three orders of magnitude and we have demonstrated NIR photon counting. Tunnel-tunnel current dominates measured dark current at high bias voltages for temperatures ≤ 65K. At higher temperatures, tunnel-thermal dominates. At low temperatures and bias voltages, dark is glow-limited and not responsive to either temperature or bias voltage. Histograms of individual avalanche events show a broad distribution but allow for photon-counting. Several deployments of the SAPHIRA have also been conducted.
Conference Presentation
© (2018) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Dani Atkinson, Donald Hall, Sean Goebel, Shane Jacobson, and Ian Baker "Observatory deployment and characterization of SAPHIRA HgCdTe APD arrays", Proc. SPIE 10709, High Energy, Optical, and Infrared Detectors for Astronomy VIII, 107091H (6 July 2018); https://doi.org/10.1117/12.2311814
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