A new method of probing mechanical losses of coatings at cryogenic temperatures
| Affiliation auteurs | !!!! Error affiliation !!!! |
| Titre | A new method of probing mechanical losses of coatings at cryogenic temperatures |
| Type de publication | Journal Article |
| Year of Publication | 2016 |
| Auteurs | Galliou S, Deleglise S, Goryachev M, Neuhaus L, Cagnoli G, Zerkani S, Dolique V, Bon J, Vacheret X, Abbe P, Pinard L, Michel C, Karassouloff T, Briant T, Cohadon P-F, Heidmann A, Tobar ME, Bourquin R |
| Journal | REVIEW OF SCIENTIFIC INSTRUMENTS |
| Volume | 87 |
| Pagination | 123906 |
| Date Published | DEC |
| Type of Article | Article |
| ISSN | 0034-6748 |
| Résumé | 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 x 10(-5) near 30 MHz at 4 K. The results are compared to the previous measurements. Published by AIP Publishing. |
| DOI | 10.1063/1.4972106 |