| Autor: |
Williams PA, Hadler JA, Lee R, Maring FC, Lehman JH |
| Jazyk: |
angličtina |
| Zdroj: |
Optics letters [Opt Lett] 2013 Oct 15; Vol. 38 (20), pp. 4248-51. |
| DOI: |
10.1364/OL.38.004248 |
| Abstrakt: |
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, a 530 W Yb-doped fiber laser, and a 92 kW CO(2) laser, we present preliminary results of absolute optical power measurements with inaccuracies of better than 7% to 13%. We find negligible contribution from radiometric (thermal) forces. We also identify this scale's dynamic-force noise floor for a 0.1 Hz modulation frequency as 4 μN/Hz(1/2) or, as optical power sensitivity, 600 W/Hz(1/2). |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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