Determination of e/h ratio by optical measurements

T. Kübarsepp, M. Tamre, J. Gran, E. Monakhov, Mikko Merimaa, L. Werner, M. L. Rastello

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review


    A follow-up initiative of development in the field of optical radiometry undertaken in the frame of European Metrology Research Programme (EMRP) is described. Amongst the other tasks, the new project NEWSTAR aims at accurate determination of ratio e/h of fundamental constants - elementary charge e and Planck's constant h. This is envisaged to achieve by using improved version of Predictable Quantum Efficiency Detector with carefully pre-examined physical properties of inversion-layer Silicon-photodiodes and advanced measurement techniques. The principal approach towards reaching the goal is presented and discussed.
    Original languageEnglish
    Title of host publication29th Conference on Precision Electromagnetic Measurements (CPEM 2014)
    PublisherIEEE Institute of Electrical and Electronic Engineers
    ISBN (Electronic)978-1-4799-2479-0, 978-1-4799-2478-3
    ISBN (Print)978-1-4799-5205-2
    Publication statusPublished - 1 Jan 2014
    MoE publication typeA4 Article in a conference publication
    Event29th Conference on Precision Electromagnetic Measurements, CPEM 2014 - Rio de Janeiro, Brazil
    Duration: 24 Aug 201429 Aug 2014


    Conference29th Conference on Precision Electromagnetic Measurements, CPEM 2014
    Abbreviated titleCPEM 2014
    CityRio de Janeiro


    • Measurement
    • measurement standards
    • measurement uncertainty
    • optical radiometry
    • semiconductor technology


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