A method for calibrating of a trap pyroelectric detector in the UV-vis domain

The method and the experimental setup of a trap pyroelectric detector calibration against the BNM-INM Cryogenic Radiometer, at three laser wavelengths in the visible range were investigated. With this study, we have extended the absolute sensitivity measurements of the electrically calibrated trap pyroelectric detector (trap EPD) over 350-1850 nm range by spectroscopic reflectivity measurements. With our method, the relative standard uncertainty associated to the wedging factor was less then 0.4% (coverage factor, k = 1).