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Broadband, 920-nm mirror thin film damage competition
Abstract
This year’s competition proposed to survey the state-of-the-art broadband, near-IR multilayer dielectric (MLD) mirrors designed for ultra-short, pulsed laser applications. The requirements for the coatings were a minimum reflection of 99.5% at 45-degree incidence angle for S-polarization from 830 nm to 1010 nm and group delay dispersion (GDD) < ± 50 fs2. The participants in this effort selected the coating materials, coating design, and deposition method. Samples were damage tested at a single testing facility to enable direct comparison among the participants using a 25 ± 5 fs OPCPA laser system operating at 5 Hz. A double blind test assured sample and submitter anonymity. The damage performance results, sample rankings, details of the deposition processes, coating materials and substrate cleaning methods are shared here. We found that multilayer coatings using tantala and/or hafnia as high index materials were top performers within several coating deposition groups. Specifically, dense coatings by ion-beam sputtering (IBS), magnetron sputtering (MS), and electron-beam ion assisted deposition (e-beam IAD) exhibited highest damage initiation onset (LIDT) while e-beam coatings were low performers. In addition, damage growth onset (LDGT) was also examined and the results are reported here for all samples as this performance metric plays an important rolemore »
- Authors:
-
[2];
[2];
[2]
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- University of Rochester, NY (United States)
- Publication Date:
- Research Org.:
- Univ. of Rochester, NY (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 2248011
- Grant/Contract Number:
- NA0003856; AC52-07NA27344
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Proceedings of SPIE - The International Society for Optical Engineering
- Additional Journal Information:
- Journal Volume: 12726; Conference: SPIE Laser Damage, Livermore, CA (United States), 17-21 Sep 2023; Journal ID: ISSN 0277-786X
- Publisher:
- SPIE
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING; thin films; multilayer dielectric coatings; laser damage resistance; laser damage testing; broadband; low dispersion; femtosecond pulses; near-IR; high reflectors
Citation Formats
Negres, Raluca A., Kafka, Kyle R. P., Smith, Chris, Stehlik, Marek, Olandt, Sarah, Demos, Stavros G., and Rigatti, Amy. Broadband, 920-nm mirror thin film damage competition. United States: N. p., 2023.
Web. doi:10.1117/12.2685127.
Negres, Raluca A., Kafka, Kyle R. P., Smith, Chris, Stehlik, Marek, Olandt, Sarah, Demos, Stavros G., & Rigatti, Amy. Broadband, 920-nm mirror thin film damage competition. United States. https://doi.org/10.1117/12.2685127
Negres, Raluca A., Kafka, Kyle R. P., Smith, Chris, Stehlik, Marek, Olandt, Sarah, Demos, Stavros G., and Rigatti, Amy. Fri .
"Broadband, 920-nm mirror thin film damage competition". United States. https://doi.org/10.1117/12.2685127.
@article{osti_2248011,
title = {Broadband, 920-nm mirror thin film damage competition},
author = {Negres, Raluca A. and Kafka, Kyle R. P. and Smith, Chris and Stehlik, Marek and Olandt, Sarah and Demos, Stavros G. and Rigatti, Amy},
abstractNote = {This year’s competition proposed to survey the state-of-the-art broadband, near-IR multilayer dielectric (MLD) mirrors designed for ultra-short, pulsed laser applications. The requirements for the coatings were a minimum reflection of 99.5% at 45-degree incidence angle for S-polarization from 830 nm to 1010 nm and group delay dispersion (GDD) < ± 50 fs2. The participants in this effort selected the coating materials, coating design, and deposition method. Samples were damage tested at a single testing facility to enable direct comparison among the participants using a 25 ± 5 fs OPCPA laser system operating at 5 Hz. A double blind test assured sample and submitter anonymity. The damage performance results, sample rankings, details of the deposition processes, coating materials and substrate cleaning methods are shared here. We found that multilayer coatings using tantala and/or hafnia as high index materials were top performers within several coating deposition groups. Specifically, dense coatings by ion-beam sputtering (IBS), magnetron sputtering (MS), and electron-beam ion assisted deposition (e-beam IAD) exhibited highest damage initiation onset (LIDT) while e-beam coatings were low performers. In addition, damage growth onset (LDGT) was also examined and the results are reported here for all samples as this performance metric plays an important role in establishing the safe operational conditions for larger aperture, ultrashort pulsed lasers. As a result, not all coating samples in the survey met the GDD requirements stated above and associated measurements are discussed in the context of the present and past competitions focused on similar broadband, near-IR MLD coatings.},
doi = {10.1117/12.2685127},
journal = {Proceedings of SPIE - The International Society for Optical Engineering},
number = ,
volume = 12726,
place = {United States},
year = {Fri Nov 24 00:00:00 EST 2023},
month = {Fri Nov 24 00:00:00 EST 2023}
}
Search WorldCat to find libraries that may hold this journalWorks referenced in this record:
40-fs broadband low dispersion mirror thin film damage competition
conference, December 2016
- Negres, Raluca A.; Stolz, Christopher J.; Kafka, Kyle R. P.
- SPIE Laser Damage, SPIE Proceedings
BDS thin film damage competition
conference, December 2008
- Stolz, Christopher J.; Thomas, Michael D.; Griffin, Andrew J.
- Boulder Damage Symposium XL Annual Symposium on Optical Materials for High Power Lasers, SPIE Proceedings
Introduction to SG-II 5 PW Laser Facility
conference, January 2016
- Zhu, Jiangqiang; Xie, Xinglong; Yang, Qingwei
- Conference on Lasers and Electro-Optics
Methods and apparatus for comprehensive characterization of performance attributes and damage thresholds of ultrafast laser optics
journal, May 2022
- Kafka, Kyle R. P.; Kosc, Tanya Z.; Demos, Stavros G.
- Optical Engineering, Vol. 61, Issue 07
2020 roadmap on plasma accelerators
journal, March 2021
- Albert, Félicie; Couprie, M. E.; Debus, Alexander
- New Journal of Physics, Vol. 23, Issue 3