Determination of e/h ratio by optical measurements

T. Kübarsepp, M. Tamre, J. Gran, E. Monakhov, M. 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 publication Digest
PublisherIEEE Institute of Electrical and Electronic Engineers
Number of pages2
ISBN (Electronic)9781479952052
Publication statusPublished - 1 Jan 2014
MoE publication typeA4 Article in a conference publication
EventConference on Precision Electromagnetic Measurements, CPEM 2014 - Rio de Janeiro, Brazil
Duration: 25 Aug 201429 Aug 2014


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


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

Fingerprint Dive into the research topics of 'Determination of e/h ratio by optical measurements'. Together they form a unique fingerprint.

Cite this