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Laser-induced damage and contamination testing for the next generation of LIDAR space optics

Bartels, Nils and Allenspacher, Paul and Alig, Thimotheus and Balasa, Istvan and Schröder, Helmut and Taube, Gabriele and Riede, Wolfgang (2021) Laser-induced damage and contamination testing for the next generation of LIDAR space optics. In: Proceedings of SPIE - The International Society for Optical Engineering. International Conference on Space Optics—ICSO 2020, 20. Mär. - 2. Apr. 2021, virtuell. doi: 10.1117/12.2600036. ISSN 0277-786X.

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Official URL: https://www.spiedigitallibrary.org/conference-proceedings-of-spie/11852/1185260/Laser-induced-damage-and-contamination-testing-for-the-next-generation/10.1117/12.2600036.full


We have recently reported a method to improve the laser-induced damage threshold of UV laser optics by mitigating damage precursors (nano-sized absorbers) during the manufacturing of ion-beam sputtered, anti-reflective optical coatings. To further optimize parameters of the coating and particle mitigation schemes, we had to assess the damage resistance of laser optics with a low density of damage precursors. This was achieved using large area raster scans in which a high-intensity laser beam was scanned over the optical surface. Via image processing of microscopic data, we then derived the density and size distribution of laser-induced damages for each raster scan. This advanced test method is described in this work and prepared the path to the manufacturing of improved laser optics that can be used to increase the performance and reliability of lasers in future space missions. Furthermore, we report on the comparison of standard and improved laser optics in tests of laser-induced contamination at 355 and 266 nm.

Item URL in elib:https://elib.dlr.de/142967/
Document Type:Conference or Workshop Item (Poster)
Title:Laser-induced damage and contamination testing for the next generation of LIDAR space optics
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Bartels, NilsNils.Bartels (at) dlr.deUNSPECIFIED
Allenspacher, PaulPaul.Allenspacher (at) dlr.deUNSPECIFIED
Alig, ThimotheusLaser Zentrum HannoverUNSPECIFIED
Balasa, Istvani.balasa (at) lzh.deUNSPECIFIED
Schröder, HelmutHelmut.Schroeder (at) dlr.deUNSPECIFIED
Taube, GabrieleGabriele.Taube (at) dlr.deUNSPECIFIED
Riede, WolfgangWolfgang.Riede (at) dlr.deUNSPECIFIED
Date:June 2021
Journal or Publication Title:Proceedings of SPIE - The International Society for Optical Engineering
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
DOI :10.1117/12.2600036
Keywords:Laser-induced damage testing, Raster scan, Light detection and ranging (LIDAR), Ion beam sputtering, Coating optimization
Event Title:International Conference on Space Optics—ICSO 2020
Event Location:virtuell
Event Type:international Conference
Event Dates:20. Mär. - 2. Apr. 2021
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:other
DLR - Research area:Raumfahrt
DLR - Program:R - no assignment
DLR - Research theme (Project):R - no assignment
Location: Stuttgart
Institutes and Institutions:Institute of Technical Physics > Active Optical Systems
Deposited By: Bartels, Nils
Deposited On:12 Jul 2021 13:56
Last Modified:16 Feb 2022 14:47

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