Details

Autor(en) / Beteiligte

• Principe, Maria
• Pinto, Innocenzo M.
• Pierro, Vincenzo
• DeSalvo, Riccardo
• Taurasi, Ilaria
• Villar, Akira E.
• Black, Eric D.
• Libbrecht, Kenneth G.
• Michel, Christophe
• Morgado, Nazario
• Pinard, Laurent

Titel

Material loss angles from direct measurements of broadband thermal noise

Ist Teil von

• Physical review. D, Particles, fields, gravitation, and cosmology, 2015-01, Vol.91 (2), Article 022005

Ort / Verlag

American Physical Society

Erscheinungsjahr

2015

Link zum Volltext

Quelle

PROLA - Physical Review Online Archive

Beschreibungen/Notizen

• We estimate the loss angles of the materials currently used in the highly reflective test-mass coatings of interferometric detectors of gravitational waves, namely Silica, Tantala, and Ti-doped Tantala, from direct measurement of coating thermal noise in an optical interferometer testbench, the Caltech TNI. We also present a simple predictive theory for the material properties of amorphous glassy oxide mixtures, which gives results in good agreement with our measurements on Ti-doped Tantala. Alternative measurement methods and results are reviewed, and some critical issues are discussed.