Title :
Determination of e/h ratio by optical measurements
Author :
Kubarsepp, T. ; Tamre, M. ; Gran, Jarle ; Monakhov, E. ; Merimaa, M. ; Werner, Lars ; Rastello, M.L.
Author_Institution :
AS Metrosert, Tallinn, Estonia
Abstract :
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.
Keywords :
elemental semiconductors; optical sensors; optical variables measurement; photodetectors; photodiodes; radiometry; silicon; EMRP; European Metrology Research Programme; NEWSTAR; Planck constant h; Si; constants-elementary charge e; e-h ratio determination; inversion-layer silicon-photodiode; optical measurement; optical radiometry; pre-examined physical property; predictable quantum efficiency detector; Detectors; Measurement uncertainty; Optical reflection; Optical variables measurement; Radiometry; Semiconductor device measurement; Standards; Measurement; measurement standards; measurement uncertainty; optical radiometry; semiconductor technology;
Conference_Titel :
Precision Electromagnetic Measurements (CPEM 2014), 2014 Conference on
Conference_Location :
Rio de Janeiro
Print_ISBN :
978-1-4799-5205-2
DOI :
10.1109/CPEM.2014.6898346
