Surface roughness and laser damage threshold

The essential results of a carefully controlled experimental investigation of the effect of roughness on laser-induced surface damage thresholds in fused silica are reported. Sets of fused silica samples were subjected to several surface preparations such that rms surface roughness values within eac...

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Bibliographic Details
Published in:IEEE journal of quantum electronics 1977-05, Vol.13 (5), p.361-363
Main Authors: House, R., Bettis, J., Guenther, A.
Format: Article
Language:English
Subjects:
Fires
Optical control
Optical scattering
Plasma measurements
Rough surfaces
Silicon compounds
Surface emitting lasers
Surface roughness
Surface topography
Surface treatment
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Summary:The essential results of a carefully controlled experimental investigation of the effect of roughness on laser-induced surface damage thresholds in fused silica are reported. Sets of fused silica samples were subjected to several surface preparations such that rms surface roughness values within each set varied over two orders of magnitude. A plot of surface damage threshold versus surface roughness shows that there is a strong dependence of threshold on roughness, that this dependence exhibits a simple functional form, and that this relationship appears to hold even for the smoothest of optical surfaces. The utility of the observed threshold-roughness relationship is discussed.
ISSN:0018-9197
1558-1713
DOI:10.1109/JQE.1977.1069342