Measurement system for photodetector characterization

A measurement system for electro-optical characterization of photodetectors and photodetector arrays is presented. The system is intended for laboratory use where typically a few devices are characterized at a time. The instrument is designed for determining the photoresponse (dc and pulse) of a single photodetector or a photodetector array as a function of wavelength, position, and temperature. In case of photodetector arrays, the measurement of modulation transfer function (MTF) and fast determination of its photoresponse nonuniformity (PRNU) is also possible. The instrument setup and experimental results are presented.