Bulletin of the American Physical Society
APS March Meeting 2020
Volume 65, Number 1
Monday–Friday, March 2–6, 2020; Denver, Colorado
Session W52: Thin Film Coatings and Applications
8:00 AM–10:48 AM,
Friday, March 6, 2020
Room: Mile High Ballroom 1E
Sponsoring
Unit:
DCMP
Chair: Daniel Dougherty, North Carolina State University
Abstract: W52.00002 : Amorphous oxides to improve the coatings of future gravitational wave detectors*
View Presentation
Abstract
Presenter:
Gabriele Vajente
(Caltech)
Authors:
Gabriele Vajente
(Caltech)
Mariana Fazio
(Department of Electrical and Computer Engineering, Colorado State University Fort Collins)
Le Yang
(Department of Chemistry, Colorado State University Fort Collins)
Alena Ananyeva
(Caltech)
GariLynn Billingsley
(Caltech)
Ashot Markosyan
(Edward L. Ginzton Laboratory, Stanford University)
Riccardo Bassiri
(Edward L. Ginzton Laboratory, Stanford University)
Martin M. Fejer
(Edward L. Ginzton Laboratory, Stanford University)
Carmen Susana Menoni
(Department of Electrical and Computer Engineering, Colorado State University Fort Collins)
We characterized the optical and elastic properties of several oxides: yttria, hafnia, niobia, alumina, zirconia, zinc oxide, germania and doped germania. We also measured the mechanical loss at room temperature of all materials. Additionally, we performed several heat cycles and measured the changes induced in the mechanical loss.
We found interesting results for germania and doped germania: they exhibit room-temperature loss angles much lower than all oxides other than silica, making them a promising candidate for the high reflectivity coatings of future gravitational wave detectors.
*This work is supported by the National Science Foundation through grants No. 1708010 and 1710957.
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