Progress in the measurement and reduction of thermal noise in optical coatings for gravitational-wave detectors.
Appl Opt
; 59(5): A229-A235, 2020 Feb 10.
Article
in En
| MEDLINE
| ID: mdl-32225410
ABSTRACT
Coating thermal noise is a fundamental limit for precision experiments based on optical and quantum transducers. In this review, after a brief overview of the techniques for coating thermal noise measurements, we present the latest worldwide research activity on low-noise coatings, with a focus on the results obtained at the Laboratoire des Matériaux Avancés. We report new updated values for the Ta2O5, Ta2O5-TiO2, and SiO2 coatings of the Advanced LIGO, Advanced Virgo, and KAGRA detectors, and new results from sputtered Nb2O5, TiO2-Nb2O5, Ta2O5-ZrO2, MgF2, AlF3, and silicon nitride coatings. Amorphous silicon, crystalline coatings, high-temperature deposition, multi-material coatings, and composite layers are also briefly discussed, together with the latest developments in structural analyses and models.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
Appl Opt
Year:
2020
Document type:
Article