Spidell, M.
, Hadler, J.
, Stephens, M.
, Lehman, J.
and Williams, P.
(2017),
Geometric contributions to chopper wheel optical attenuation uncertainty, Metrologia, [online], https://doi.org/10.1088/1681-7575/aa75d2/meta
(Accessed December 2, 2024)
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Geometric contributions to chopper wheel optical attenuation uncertainty
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Abstract
Calibrated reflective optical choppers are used in NISTs high power laser calibration services due to their advantages in performance and safety over wedges and semi-transparent materials for beam power reduction. While the design, operation, and calibration of such choppers is generally straightforward, fabrication tolerances and edge geometry must be taken into account for low transmission (Citation
Metrologia
Issue
54
Pub Type
Journals
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Keywords
attenuation method, optical power calibration, radiometer, calorimeter, chopper wheel, high power laser
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Created December 9, 2017, Updated November 10, 2018