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Absolute high-power laser measurements with a flowing water power meter

Published

Author(s)

Christopher L. Cromer, Xiaoyu X. Li, John H. Lehman, Marla L. Dowell

Abstract

We describe a novel flowing water power meter (FWOPM) for high-power laser radiometry in the range of 50 W to 10 kW. The FWOPM has several design features; a rotating mirror oriented at 45° with respect to the incoming radiation, a conical light-trapping cavity coated with a multiwall carbon nanotube composite and a modular electrical heater for calibration. The design is modular to facilitate shipment to the laser facility and for scaling of measurements up to 100 kW. We have demonstrated 1 % relative uncertainty with laser power measurements near 5 kW at 1.06 υm and 10.6 υm wavelengths.
Proceedings Title
11th International Conference on New Developments and Applications in Optical Radiometry
Conference Dates
September 18-23, 2011
Conference Location
Maui, HI

Keywords

calorimeter, calorimetry, carbon nanotubes, flowing water power meter, laser power meter, radiometry

Citation

Cromer, C. , Li, X. , Lehman, J. and Dowell, M. (2011), Absolute high-power laser measurements with a flowing water power meter, 11th International Conference on New Developments and Applications in Optical Radiometry, Maui, HI, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=908219 (Accessed February 26, 2024)
Created September 18, 2011, Updated February 19, 2017