Traceable laser power measurements of diode laser radiation in the near infrared |
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Authors: | Friedhelm Brandt Stefan Kück André Grütz |
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Affiliation: | (1) LTRAC, Department of Mechanical and Aerospace Engineering, Monash University, VIC, 3800 Melbourne, Australia |
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Abstract: | We report a new calibration setup for laser radiometry at the Physikalisch-Technische Bundesanstalt, the German National Metrology
Institute. Measurements of laser diode power of free beam diode lasers in the near infrared spectral range at a wavelength
of 808 nm for powers up to 250 W and at wavelengths of 915 nm, 940 nm, and 980 nm for laser powers up to 25 W have been established.
The calibration setup, the standard detector, the uncertainty budget and first calibration results will be presented and discussed.
The standard uncertainty of the HLR302 standard detector is 0.2%. This uncertainty might be the main contribution to the overall
uncertainty in customer calibrations, depending on the quality of the transfer detectors. |
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