Routine NIST spectral responsivity calibrations are needed for the infrared range. Low NEP pyroelectric radiometers have been developed for traditional monochromator applications to extend the responsivity scale to the infrared. After NEP tests, the best pyroelectric detectors were converted to transfer-standard radiometers. The relative spectral responsivities were determined from spectral reflectance measurements of the organic black detector-coatings. The absolute tie points were measured against a domed pyroelectric radiometer standard and a sphere-input extended-InGaAs transfer standard radiometer. A single grating monochromator has been adapted to the calibration facility and used to characterize and calibrate infrared detectors.
Pub Type: Journals
detector, near-infrared, NEP, organic black, pyroelectric, radiometer, spectral reflectance, spectral responsivity, transfer standard