Optical power scale realization using the predictable quantum efficient detector

Kinza Maham, Petri Kärhä, Farshid Manoocheri, Erkki Ikonen

    Research output: Contribution to journalArticle in a proceedings journalScientificpeer-review


    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.

    Original languageEnglish
    Article number012006
    Number of pages6
    JournalJournal of Physics: Conference Series
    Issue number1
    Publication statusPublished - 6 Jan 2022
    MoE publication typeA4 Article in a conference publication
    Event14th International Conference on New Developments and Applications in Optical Radiometry, NEWRAD 2021 - Boulder, United States
    Duration: 21 Jun 202124 Jun 2021


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