Flowing-water optical power meter for primary-standard, multi-kilowatt laser power measurements

A primary-standard flowing-water optical power meter for measuring multi-kilowatt laser emission has been built and operated. The design and operational details of this primary standard are described, and a full uncertainty analysis is provided covering the measurement range from 1–10 kW with an exp...

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Bibliographic Details
Published in:Metrologia 2018-06, Vol.55 (3), p.427-436, Article 427
Main Authors: Williams, P A, Hadler, J A, Cromer, C, West, J, Li, X, Lehman, J H
Format: Article
Language:English
Subjects:
Lasers
Measurement
Power
Power measurement
Rangefinding
Uncertainty analysis
Water flow
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Description
Summary:A primary-standard flowing-water optical power meter for measuring multi-kilowatt laser emission has been built and operated. The design and operational details of this primary standard are described, and a full uncertainty analysis is provided covering the measurement range from 1–10 kW with an expanded uncertainty of 1.2%. Validating measurements at 5 kW and 10 kW show agreement with other measurement techniques to within the measurement uncertainty.
ISSN:0026-1394
1681-7575
DOI:10.1088/1681-7575/aaae78