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Proceedings Paper

Influence of pre-treatment conditions on the resistivity of fluoride multilayers
Author(s): H. Blaschke; D. Ristau; W. Riggers; S. Schippel
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Paper Abstract

With respect to laser-based applications below 200 nm, fluoride materials used as layer and substrate materials are most prominent in optical components for beam shaping, steering and focussing. High band gaps and comparatively low extinction coefficients are the outstanding parameters of these components. However, fluoride coatings are exceedingly sensitive concerning surface contamination, handling, ambient atmosphere, humidity and total energy load. A set of fluoride layer stacks from different coating plants has been investigated by spectroscopic methods measuring the optical performance, laser calorimetry detecting the absorptive losses and LIDT testing the radiation resistivity of the specimens. Another set of samples was applied to an UV treatment system in nitrogen atmosphere before testing the optical performance by the procedures listed above.

Paper Details

Date Published: 30 December 2008
PDF: 8 pages
Proc. SPIE 7132, Laser-Induced Damage in Optical Materials: 2008, 71320I (30 December 2008); doi: 10.1117/12.804463
Show Author Affiliations
H. Blaschke, Laser Zentrum Hannover e.V. (Germany)
D. Ristau, Laser Zentrum Hannover e.V. (Germany)
W. Riggers, Laseroptik GmbH (Germany)
S. Schippel, Layertec GmbH (Germany)

Published in SPIE Proceedings Vol. 7132:
Laser-Induced Damage in Optical Materials: 2008
Gregory J. Exarhos; Detlev Ristau; M. J. Soileau; Christopher J. Stolz, Editor(s)

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