NIST provides calibration of the spectral responsivity and spatial uniformity of photodetectors for use in industrial and government labs. These calibrations are carried out using two monochromator-based Spectral Comparator Facilities (SCFs) covering the spectral range of 200 nm to 1800 nm.
The spectral responsivities of typical photodiodes that are used in the ultraviolet, visible, and near-infrared and calibrated by the SCFs are shown below.
**Any commercial equipment, instruments, or materials mentioned are identified to foster understanding. Such identification does not imply recommendation or endorsement by the National Institute of Standards and Technology, nor does it imply that the materials or equipment identified are necessarily the best available for the purpose.
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Spectral responsivity calibrations
Spectral responsivity measurement:
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