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Article Dans Une Revue Appl.Opt. Année : 2020

Progress in the measurement and reduction of thermal noise in optical coatings for gravitational-wave detectors

Résumé

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.

Dates et versions

hal-02458695 , version 1 (28-01-2020)

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M. Granata, A. Amato, G. Cagnoli, M. Coulon, J. Degallaix, et al.. Progress in the measurement and reduction of thermal noise in optical coatings for gravitational-wave detectors. Appl.Opt., 2020, 59 (5), pp.A229-A235. ⟨10.1364/AO.377293⟩. ⟨hal-02458695⟩
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