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Enhancement of contamination growth and damage by absorption centers under UV irradiation

Balasa, Istvan and Hippler, Markus and Schröder, Helmut and Jensen, Lars and Gauch, M. and Ristau, D. and Riede, Wolfgang (2015) Enhancement of contamination growth and damage by absorption centers under UV irradiation. In: Proceedings of SPIE - The International Society for Optical Engineering, 9237, 92372A. SPIE. Laser-Induced Damage in Optical Materials: 2014, 14.-17. Sep. 2014, Boulder, Colorado, United States. DOI: 10.1117/12.2085138 ISBN 9781628413007

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Official URL: http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=1930867

Abstract

Contamination plays a major role in lifetime of vacuum optics. Several efforts have been made to derive suitable models for lifetime prediction in laser-induced contamination related optical breakdown. But the broad spectrum of potential contaminants present in the various applications with their very specific contamination mechanisms complicates the derivation of universal optics degradation models. As one possible contamination initiation process, the impact of optical absorption on the laser-induced contamination and resulting optical breakdown is studied in this work. A set of specifically prepared samples using nanometer sized gold particles embedded in dense IBS anti-reflecting coatings is exposed to radiation of 355nm in low pressure naphthalene atmosphere. Even though the artificial defects are not in direct contact with the contaminant, their influence on the long-term optics performance in dependence on the particle concentration in the coating is evident. In the presence of naphthalene, the artificial nano-defects cause a significantly accelerated degradation compared to reference samples without those defects or in absence of the contaminant. For this specific type of contaminant, a correlation of the optical absorption and long-term durability is derived.

Item URL in elib:https://elib.dlr.de/98129/
Document Type:Conference or Workshop Item (Poster)
Title:Enhancement of contamination growth and damage by absorption centers under UV irradiation
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Balasa, Istvani.balasa (at) lzh.deUNSPECIFIED
Hippler, Markusmarkus.hippler (at) dlr.deUNSPECIFIED
Schröder, Helmuthelmut.schroeder (at) dlr.deUNSPECIFIED
Jensen, LarsLZHUNSPECIFIED
Gauch, M.LZHUNSPECIFIED
Ristau, D.LZHUNSPECIFIED
Riede, Wolfgangwolfgang.riede (at) dlr.deUNSPECIFIED
Date:2015
Journal or Publication Title:Proceedings of SPIE - The International Society for Optical Engineering
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
Volume:9237
DOI :10.1117/12.2085138
Page Range:92372A
Editors:
EditorsEmail
Exarhos, Gregory J.Pacific Northwest National Lab
Gruzdev, Vitaly E.Univ of Missouri
Menapace, Joseph A.Lawrence Livermore National Lab
Ristau, DetlevLZH
Soileau, MJUNSPECIFIED
Publisher:SPIE
Series Name:Proceedings of SPIE
ISBN:9781628413007
Status:Published
Keywords:laser-induced contamination, LIC, embedded gold nanoparticles, UV irradiation
Event Title:Laser-Induced Damage in Optical Materials: 2014
Event Location:Boulder, Colorado, United States
Event Type:international Conference
Event Dates:14.-17. Sep. 2014
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Laser Research and Technology
Location: Stuttgart
Institutes and Institutions:Institute of Technical Physics > Active Optical Systems
Deposited By: Hippler, Markus
Deposited On:09 Sep 2015 11:26
Last Modified:31 Jul 2019 19:55

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