Laser resistance dependence of interface for high-reflective coatings studied by capacitance-voltage and absorption measurement.
Opt Lett
; 43(18): 4538-4541, 2018 Sep 15.
Article
en En
| MEDLINE
| ID: mdl-30211910
ABSTRACT
HfO2/SiO2 bilayer coatings and multilayer high-reflection coatings without and with a modified co-evaporated interface (MCEI) have been prepared. An MCEI is designed to be evaporated at an oxygen-deficient environment to achieve higher absorption than the conventional discrete interface. Capacitance-voltage measurements and absorption measurements demonstrate that an MCEI increases the trap density and leads to higher absorption. The laser-induced damage threshold and nano-indenter test results indicate that the MCEI multilayer coating exhibits better laser resistance and mechanical property, despite the larger absorption. The experimental results suggest that adhesive force between layers plays a more important role in nanosecond laser damage resistance than interface absorption.
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Bases de datos:
MEDLINE
Idioma:
En
Revista:
Opt Lett
Año:
2018
Tipo del documento:
Article