Projects per year
We report realization of scales for optical power of lasers and spectral responsivity of laser power detectors based on a predictable quantum efficient detector (PQED) over the spectral range of 400 nm – 800 nm. The PQED is characterized and used to measure optical power of a laser that is further used in calibration of the responsivities of a working standard trap detector at four distinct laser lines, with an expanded uncertainty of about 0.05%. We present a comparison of responsivities calibrated against the PQED at Aalto and the cryogenic radiometer at RISE, Sweden. The measurement results support the concept that the PQED can be used as a primary standard of optical power.
|Number of pages||5|
|Journal||Journal of Physics: Conference Series|
|Publication status||Published - 6 Jan 2022|
|MoE publication type||A4 Conference publication|
|Event||International Conference on New Developments and Applications in Optical Radiometry - Internet, Gaithersburg, United States|
Duration: 21 Jun 2021 → 24 Jun 2021