Performance of a commercial camera with the SAPHIRA near-infrared APD array: evaluation of performance before and after correction of two issues by the factory

Robert L. Johnson; Magen O. Byrd; Marjorie Stewart

doi:10.1117/12.2562637

13 December 2020 Performance of a commercial camera with the SAPHIRA near-infrared APD array: evaluation of performance before and after correction of two issues by the factory

Robert L. Johnson, Magen O. Byrd, Marjorie Stewart

Author Affiliations +

Proceedings Volume 11454, X-Ray, Optical, and Infrared Detectors for Astronomy IX; 114543I (2020) https://doi.org/10.1117/12.2562637
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Conference Poster

Abstract

We present our laboratory tests of a commercial near-infrared camera, the C-RED One, which was built by First Light Imaging. The camera uses a high-speed, low-noise, HgCdTe avalanche photo-diode (APD) array from Leonardo. We used the photon transfer technique to measure the gain and read noise. In early 2019, we identified the source of a fluctuating sensor bias, which limited the noise performance of the camera. We also measured the effect of the cryo-cooler on vibration of the array, which limited its performance as a tilt sensor. We sent the camera back to the FLI, where they installed a redesigned power-supply board to address the issue with the fluctuating sensor bias. FLI also installed passive damping to reduce the vibration of the sensor array. Here we present the performance characteristics of the camera before and after the repair of the camera by the manufacturer.

Citation Download Citation

Robert L. Johnson, Magen O. Byrd, and Marjorie Stewart "Performance of a commercial camera with the SAPHIRA near-infrared APD array: evaluation of performance before and after correction of two issues by the factory", Proc. SPIE 11454, X-Ray, Optical, and Infrared Detectors for Astronomy IX, 114543I (13 December 2020); https://doi.org/10.1117/12.2562637

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