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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.|
|Pages:||pp. 4248 - 4251|
|Keywords:||Radiation pressure, radiometry, laser power|
|Research Areas:||Optical Physics, Radiometry|
|PDF version:||Click here to retrieve PDF version of paper (315KB)|