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Laser-induced contamination and its impact on laser damage threshold

Schroeder, Helmut and Wagner, Paul and Kokkinos, Dimitris and Riede, Wolfgang and Tighe, Adrian (2013) Laser-induced contamination and its impact on laser damage threshold. In: 45rd Annual Laser Damage Symposium on Optical Materials for High Power Lasers, 8885. Laser-Induced Damage in Optical Materials 2013, 22.-25. Sept. 2013, Boulder, USA.

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Official URL: http://dx.doi.org/10.1117/12.2030002


In this paper some basic investigations about laser-induced contamination are reported. As contamination materials pure aromatic hydrocarbons (naphthalene and anthracene) were used. A particular focus of the tests was to investigate the impact of laser-induced contamination on damage threshold. Onset and evolution of deposit formation and damage were observed in-situ by laser-induced fluorescence and transmission monitoring. As optical samples uncoated fused silica substrates and AR and HR coated optics with different coating morphology, depending on coating process (e-beam, magnetron sputtering) were investigated. Ex-situ characterization of deposits and damage morphology was performed by differential interference contrast, fluorescence, and atomic force microscopy. The tests were run with pulsed UV light at 355 nm. Partial pressure of contamination material in the range of 10-4 mbar induced a drastic reduction of laser damage threshold compared to values obtained without contamination.

Item URL in elib:https://elib.dlr.de/86188/
Document Type:Conference or Workshop Item (Speech)
Additional Information:Copyright 2013 Society of Photo Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Title:Laser-induced contamination and its impact on laser damage threshold
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Schroeder, Helmuthelmut.schroeder (at) dlr.deUNSPECIFIED
Kokkinos, DimitrisDepartment of Applied Physics, University of Liege, BelgiumUNSPECIFIED
Riede, WolfgangWolfgang.Riede (at) dlr.deUNSPECIFIED
Date:November 2013
Journal or Publication Title:45rd Annual Laser Damage Symposium on Optical Materials for High Power Lasers
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Series Name:Proceedings of SPIE
Keywords:laser-induced contamination, damage, coating, laser-induced fluorescence
Event Title:Laser-Induced Damage in Optical Materials 2013
Event Location:Boulder, USA
Event Type:international Conference
Event Dates:22.-25. Sept. 2013
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research (old)
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Laser Research and Technology (old)
Location: Stuttgart
Institutes and Institutions:Institute of Technical Physics > Active Optical Systems
Deposited By: Lammers, Melanie
Deposited On:04 Dec 2013 15:19
Last Modified:08 May 2014 23:30

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