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We present a low-cost ultraviolet to infrared absolute quantum efficiencydetector characterization system developed using commercial off-the-shelfcomponents. The key components of the experiment include a light source,aregulated power supply, a monochromator, an integrating sphere, and acalibrated photodiode. We provide a step-by-step procedure to construct thephoton and quantum efficiency transfer curves of imaging sensors. We presentresults for the GSENSE 2020 BSI CMOS sensor and the Sony IMX 455 BSI CMOSsensor. As a reference for similar characterizations, we provide a list ofparts and associated costs along with images of our setup.

A low-cost ultraviolet-to-infrared absolute quantum efficiency characterization system of detectors