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Photothermal determination of the angular dependence of emissivity

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Abstract

A method for directional emissivity determination by measurement of absorption through a photothermal effect is described. The experimental results found for Au, Al, and graphite show good agreement with the theoretical prediction of the electromagnetic theory. It is shown as well that complex refractive indices can be determined by fitting angular absorption data with theory.

© 2018 Optical Society of America

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