<  Back to the Polytechnique Montréal portal

Hydrogen concentration and mechanical dissipation upon annealing in zirconia-doped tantala thin films for gravitational wave observatory mirrors

Alexandre W. Lussier, Émile Lalande, Martin Chicoine, Carl Lévesque, Sjoerd Roorda, Bill Baloukas, Ludvik Martinu, Gabriele Vajente, Alena Ananyeva and François Schiettekatte

Paper (2021)

Open Acess document in PolyPublie and at official publisher
[img]
Preview
Open Access to the full text of this document
Published Version
Terms of Use: Creative Commons Attribution
Download (1MB)
Show abstract
Hide abstract

Abstract

Sensitivity in instruments such as the Laser Interferometer Gravitational-Wave Observatory (LIGO) is limited by a noise originating from fluctuations linked to internal mechanical dissipation (IMD) in the amorphous thin films of their Bragg reflectors. We investigate the correlation between IMD, characterized by a loss angle, and the hydrogen concentration in a thin film made of Zr-doped tantalum oxide after annealing at different temperatures. The film was deposited by magnetron sputtering and the loss angle measured by gentle nodal suspension. The concentration of heavier elements was obtained by Rutherford backscattering spectrometry (RBS). The hydrogen concentration in the as-deposited and annealed samples was obtained by elastic recoil detection (ERD). We observe that the hydrogen atomic concentration gradually decreases from 2.0 ± 0.1% down to the detection limit at 0.2 ± 0.1% as we anneal to 650°C. We also find that the loss angle decreases by a factor of two over the same annealing temperature range, suggesting that the loss angle is correlated with the hydrogen concentration. However, the loss angle remains relatively high even when most of the hydrogen is desorbed. We conclude that the presence of hydrogen is not the main limiting factor for further reducing the IMD.

Department: Department of Engineering Physics
Funders: Natural Sciences and Engineering Research Council of Canada (NSERC), Canadian foundation for innovation (CFI), Fonds de recherche Québec, Nature et technologies (FQRNT), Regroupement Québécois sur les matériaux de pointe (RQMP
PolyPublie URL: https://publications.polymtl.ca/52956/
Conference Title: 25th International Conference on Ion Beam Analysis and 17th International Conference on Particle Induce X-Ray Emission (IBA-PIXE 2021) and 23rd International Conference on Secondary Ion Mass Spectrometry (SIMS 2021)
Conference Date(s): 2021-10-11 - 2021-10-15
Journal Title: Journal of Physics (vol. 2326)
Publisher: Institute of Physics
DOI: 10.1088/1742-6596/2326/1/012020
Official URL: https://doi.org/10.1088/1742-6596/2326/1/012020
Date Deposited: 18 Apr 2023 14:58
Last Modified: 12 Apr 2024 00:44
Cite in APA 7: Lussier, A. W., Lalande, É., Chicoine, M., Lévesque, C., Roorda, S., Baloukas, B., Martinu, L., Vajente, G., Ananyeva, A., & Schiettekatte, F. (2021, October). Hydrogen concentration and mechanical dissipation upon annealing in zirconia-doped tantala thin films for gravitational wave observatory mirrors [Paper]. 25th International Conference on Ion Beam Analysis and 17th International Conference on Particle Induce X-Ray Emission (IBA-PIXE 2021) and 23rd International Conference on Secondary Ion Mass Spectrometry (SIMS 2021) (7 pages). Published in Journal of Physics, 2326. https://doi.org/10.1088/1742-6596/2326/1/012020

Statistics

Total downloads

Downloads per month in the last year

Origin of downloads

Dimensions

Repository Staff Only

View Item View Item