Laser Resistance Dependence Of Interface For High-Reflective Coatings Studied By Capacitance-Voltage And Absorption Measurement

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.

Publication Date

9-15-2018

Publication Title

Optics Letters

Volume

43

Issue

18

Number of Pages

4538-4541

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1364/OL.43.004538

Socpus ID

85053194648 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85053194648

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