Optical and mechanical properties of ion-beam-sputtered MgF${}_2$ thin films for gravitational-wave interferometers

Abstract

Brownian thermal noise associated with highly reflective coatings is a fundamental limit for several precision experiments, including gravitational-wave detectors. Research is currently ongoing to find coatings with low thermal noise that also fulfill strict optical requirements such as low absorption and scatter. We report on the optical and mechanical properties of ion-beam-sputtered magnesium fluoride thin films, and we discuss the application of such coatings in current and future gravitational-wave detectors.

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Cited by in corpus (2)

• Development of ion-beam sputtered silicon nitride thin films for low-noise mirror coatings of gravitational-wave detectors
• Characterization of ion-beam-sputtered AlF${}_3$ thin films for gravitational-wave interferometers