Projects per year
Abstract
A new method of probing mechanical losses and comparing the corresponding deposition processes of metallic and dielectric coatings in 1-100 MHz frequency range and cryogenic temperatures is presented. The method is based on the use of high-quality quartz acoustic cavities whose internal losses are orders of magnitude lower than any available coating nowadays. The approach is demonstrated for chromium, chromium/gold, and multilayer tantala/silica coatings. The Ta2O5/SiO2 coating has been found to exhibit a loss angle lower than 1.6 × 10-5 near 30 MHz at 4 K. The results are compared to the previous measurements.
Original language | English |
---|---|
Article number | 123906 |
Journal | Review of Scientific Instruments |
Volume | 87 |
Issue number | 12 |
DOIs | |
Publication status | Published - 1 Dec 2016 |
Fingerprint
Dive into the research topics of 'A new method of probing mechanical losses of coatings at cryogenic temperatures'. Together they form a unique fingerprint.Projects
- 2 Finished
-
Precision tests of fundamental physics at the electroweak unification scale
Tobar, M., Peters, A., Goryachev, M., Galliou, S. & Mueller, H.
1/01/16 → 31/12/18
Project: Research
-
ARC Centre of Excellence for Engineered Quantum Systems EQuS
Milburn, G., White, A., Doherty, A., Tobar, M., Twamley, J., Bartlett, S., Biercuk, M., Bowen, W., Brennan, G., Duty, T., Gilchrist, A., Molina-Terriza, G., Rabeau, J., Reilly, D., Rubinsztein-Dunlop, H., Stace, T. & Vidal, G.
1/01/11 → 31/12/17
Project: Research