Details
| Original language | English |
|---|---|
| Article number | 118521D |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 11852 |
| Publication status | Published - 11 Jun 2021 |
| Event | 2020 International Conference on Space Optics, ICSO 2020 - Virtual, Online Duration: 30 Mar 2021 → 2 Apr 2021 |
Abstract
We manufactured and tested ion beam sputtered antireflection coatings for 355 nm using several defect mitigation strategies to improve the damage resistance of laser optics for LIDAR satellite missions. The first approach to avoid the damage precursors in the film is based on a secondary ion source. The goal is to remove the particles that settle on the surface of the growing film. A second strategy is to avoid the damage precursors in the ultraviolet wavelength range by laser conditioning of the thin films during the coating process. A laser beam at the application wavelength scans the deposited layer on the sample during deposition still in vacuum. Optical coatings produced with both technologies show a significantly increased damage threshold when tested in ramped raster scan tests.
Keywords
- Aluminum oxide, Antireflection coatings, Damage precursors, Ion beam sputtering, Laser-induced damage, Ramped raster scan tests, Silicon dioxide, Ultraviolet spectral range
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Condensed Matter Physics
- Computer Science(all)
- Computer Science Applications
- Mathematics(all)
- Applied Mathematics
- Engineering(all)
- Electrical and Electronic Engineering
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In: Proceedings of SPIE - The International Society for Optical Engineering, Vol. 11852, 118521D, 11.06.2021.
Research output: Contribution to journal › Conference article › Research › peer review
}
TY - JOUR
T1 - Mitigating damage precursors to improve the laser resistance of ion beam sputtered antireflective coatings
AU - Alig, Thimotheus
AU - Bartels, Nils
AU - Balasa, Istvan
AU - Böntgen, Tammo
AU - Ristau, Detlev
AU - Jensen, Lars
PY - 2021/6/11
Y1 - 2021/6/11
N2 - We manufactured and tested ion beam sputtered antireflection coatings for 355 nm using several defect mitigation strategies to improve the damage resistance of laser optics for LIDAR satellite missions. The first approach to avoid the damage precursors in the film is based on a secondary ion source. The goal is to remove the particles that settle on the surface of the growing film. A second strategy is to avoid the damage precursors in the ultraviolet wavelength range by laser conditioning of the thin films during the coating process. A laser beam at the application wavelength scans the deposited layer on the sample during deposition still in vacuum. Optical coatings produced with both technologies show a significantly increased damage threshold when tested in ramped raster scan tests.
AB - We manufactured and tested ion beam sputtered antireflection coatings for 355 nm using several defect mitigation strategies to improve the damage resistance of laser optics for LIDAR satellite missions. The first approach to avoid the damage precursors in the film is based on a secondary ion source. The goal is to remove the particles that settle on the surface of the growing film. A second strategy is to avoid the damage precursors in the ultraviolet wavelength range by laser conditioning of the thin films during the coating process. A laser beam at the application wavelength scans the deposited layer on the sample during deposition still in vacuum. Optical coatings produced with both technologies show a significantly increased damage threshold when tested in ramped raster scan tests.
KW - Aluminum oxide
KW - Antireflection coatings
KW - Damage precursors
KW - Ion beam sputtering
KW - Laser-induced damage
KW - Ramped raster scan tests
KW - Silicon dioxide
KW - Ultraviolet spectral range
UR - http://www.scopus.com/inward/record.url?scp=85116012757&partnerID=8YFLogxK
U2 - 10.1117/12.2599237
DO - 10.1117/12.2599237
M3 - Conference article
AN - SCOPUS:85116012757
VL - 11852
JO - Proceedings of SPIE - The International Society for Optical Engineering
JF - Proceedings of SPIE - The International Society for Optical Engineering
SN - 0277-786X
M1 - 118521D
T2 - 2020 International Conference on Space Optics, ICSO 2020
Y2 - 30 March 2021 through 2 April 2021
ER -