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

M. Granata; A. Amato; M. Bischi; M. Bazzan; G. Cagnoli; M. Canepa; M. Chicoine; A. Di Michele; G. Favaro; D. Forest; G. M. Guidi; G. Maggioni; F. Martelli; M. Menotta; M. Montani; F. Piergiovanni; F. Schiettekatte

doi:10.1103/PhysRevApplied.17.034058

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

Instrumentation and Detectors 2022-03-25 v2

Authors: M. Granata , A. Amato , M. Bischi , M. Bazzan , G. Cagnoli , M. Canepa , M. Chicoine , A. Di Michele , G. Favaro , D. Forest , G. M. Guidi , G. Maggioni , F. Martelli , M. Menotta , M. Montani , F. Piergiovanni , F. Schiettekatte

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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.

Keywords

ion-beam-sputtered MgF2 thin films optical properties mechanical properties Brownian thermal noise gravitational-wave detectors low-absorption coatings

Cite

@article{arxiv.2111.01646,
  title  = {Optical and mechanical properties of ion-beam-sputtered MgF$_2$ thin films for gravitational-wave interferometers},
  author = {M. Granata and A. Amato and M. Bischi and M. Bazzan and G. Cagnoli and M. Canepa and M. Chicoine and A. Di Michele and G. Favaro and D. Forest and G. M. Guidi and G. Maggioni and F. Martelli and M. Menotta and M. Montani and F. Piergiovanni and F. Schiettekatte},
  journal= {arXiv preprint arXiv:2111.01646},
  year   = {2022}
}

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

Abstract

Keywords

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