2.4 - Tuneable Laser-Based Calibration and Characterisation of Radiometric Detectors for SI-Traceable Measurements

M. Schuster, A. Sperling & S. Nevas
SI-traceable values of the spectral responsivity of radiometric detectors are of the highest importance in many applications in photometry and radiometry. To determine them, spectral responsivity measurements are carried out under exposure to monochromatic radiation. The electrical response of the device under test (DUT) is compared to that of a reference detector. The responsivity of the reference detector is known from a calibration with respect to the absolute cryogenic radiometer, an electrical substitution radiometer used...