Bartels, Nils and Allenspacher, Paul and Riede, Wolfgang (2018) Laser conditioning of UV anti-reflective optical coatings for applications in aerospace. Laser-Induced Damage in Optical Materials 2018: 50th Anniversary Conference, Boulder, CO, USA.
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Official URL: http://dx.doi.org/10.1117/12.2326782
Abstract
In this work we study the effect of laser conditioning on laser-induced damage of ion-beam sputtered, anti-reflection coated laser optics with ns-pulsed laser radiation at a wavelength of 355 nm. With respect to applications in aerospace, measurements were performed under high vacuum. At laser fluences below 20 J/cm2, laser-induced damage appears as pin-point damage (small explosion pits with sizes in the range of 1 micro-meter), sometimes referred to as "grey haze". We find that ramped laser conditioning is an effective tool to reduce not only the abundance but also the average size of pin-point damage at laser fluences exceeding the optic’s unconditioned laser-induced damage threshold. We discuss our results in the context of the small absorber model for damage crater formation.
Item URL in elib: | https://elib.dlr.de/123937/ | ||||||||||||
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Document Type: | Conference or Workshop Item (Poster) | ||||||||||||
Title: | Laser conditioning of UV anti-reflective optical coatings for applications in aerospace | ||||||||||||
Authors: |
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Date: | 29 November 2018 | ||||||||||||
Refereed publication: | No | ||||||||||||
Open Access: | Yes | ||||||||||||
Gold Open Access: | No | ||||||||||||
In SCOPUS: | No | ||||||||||||
In ISI Web of Science: | No | ||||||||||||
Page Range: | p. 60 | ||||||||||||
Status: | Published | ||||||||||||
Keywords: | Laser-induced damage, ion-beam sputtering, anti-reflection coating, aerospace, radiation, crater formation | ||||||||||||
Event Title: | Laser-Induced Damage in Optical Materials 2018: 50th Anniversary Conference | ||||||||||||
Event Location: | Boulder, CO, USA | ||||||||||||
Event Type: | international Conference | ||||||||||||
HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||
HGF - Program: | Space | ||||||||||||
HGF - Program Themes: | Earth Observation | ||||||||||||
DLR - Research area: | Raumfahrt | ||||||||||||
DLR - Program: | R EO - Earth Observation | ||||||||||||
DLR - Research theme (Project): | R - Security-relevant Earth Observation | ||||||||||||
Location: | Stuttgart | ||||||||||||
Institutes and Institutions: | Institute of Technical Physics | ||||||||||||
Deposited By: | Bartels, Nils | ||||||||||||
Deposited On: | 29 Nov 2018 14:57 | ||||||||||||
Last Modified: | 31 Jul 2019 20:21 |
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