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Publication Citation: Using radiation pressure for measurement of high-power laser emission

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Author(s): Paul A. Williams; Joshua A. Hadler; Robert Lee; Frank Maring; John H. Lehman;
Title: Using radiation pressure for measurement of high-power laser emission
Published: October 15, 2013
Abstract: We demonstrate a paradigm in absolute laser radiometry where a laser beam's power can be measured from its radiation pressure. Using an off-the-shelf high-accuracy mass scale and a 500 W Yb-doped fiber laser and a 92 kW CO2 laser, we show preliminary results of absolute optical power measurements with an accuracy of at least 7 %. We find a negligible contribution from radiometric forces. We also identify this scale's dynamic force noise floor (for a 0.1 Hz modulation frequency) as 4uN/Hz^1/2, or as optical power sensitivity, 600 W/Hz^1/2.
Citation: Optics Letters
Volume: 38
Issue: 20
Pages: pp. 4248 - 4251
Keywords: Radiation pressure; radiometry; laser power;
Research Areas: Optical Physics, Radiometry