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Proceedings Paper

Comprehensive studies of IR to UV light intensification by nodular defects in HfO2/SiO2 multilayer mirrors
Author(s): Linas Smalakys; Gintarė Batavičiūtė; Egidijus Pupka; Andrius Melninkaitis
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Paper Abstract

Nodular defects tend to limit laser-induced damage threshold (LIDT) of multilayer dielectric coatings frequently used for laser applications. Cross-sections of localized damage morphologies correlate well with light intensifi- cation patterns caused by defect geometries. In vast majority of studies electric field enhancement in nodular defects was investigated for infrared spectral region. In this work theoretical analysis has been extended for IR - UV range. Light intensification in HfO2/SiO2 multilayer mirror coating was studied numerically. The analysis of obtained results indicates that phenomena is very sensitive to almost every investigated parameter. It was also found that field enhancement effect can be reached within distinct material layers (either of low or high refractive index). The discussion and insights complementing existing knowledge on nodular defects were made.

Paper Details

Date Published: 31 October 2014
PDF: 8 pages
Proc. SPIE 9237, Laser-Induced Damage in Optical Materials: 2014, 92371I (31 October 2014); doi: 10.1117/12.2068310
Show Author Affiliations
Linas Smalakys, Vilnius Univ. (Lithuania)
Gintarė Batavičiūtė, Vilnius Univ. (Lithuania)
Egidijus Pupka, Vilnius Univ. (Lithuania)
Andrius Melninkaitis, Vilnius Univ. (Lithuania)

Published in SPIE Proceedings Vol. 9237:
Laser-Induced Damage in Optical Materials: 2014
Gregory J. Exarhos; Vitaly E. Gruzdev; Joseph A. Menapace; Detlev Ristau; MJ Soileau; Detlev Ristau, Editor(s)

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