Measurement uncertainties
Dimensional measurements using laser interferometry
Archive REF: R1320 V1
Measurement uncertainties
Dimensional measurements using laser interferometry

Author : Geneviève LIPINSKI

Publication date: July 10, 1995 | Lire en français

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4. Measurement uncertainties

4.1 Wavelength uncertainty

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4.1.1 Wavelength uncertainty in a vacuum

Measurements of the frequency of many lasers show that there is a certain dispersion around the value entered into the calculator by the manufacturer. This is approximately :

10 – 7 in relative terms

If this uncertainty, which leads to an uncertainty on displacement measurements...

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