Mirror Coating Research and Developments for Current and Future Gravitational-Wave Detectors

Alex Amato; Michele Magnozzi; Janis Wohler

doi:10.1002/adpr.202400117

Mirror Coating Research and Developments for Current and Future Gravitational-Wave Detectors

Alex Amato^*, Michele Magnozzi, Janis Wohler

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

Abstract

In current and future gravitational-wave detectors, thermal noise from mirror coatings limits the sensitivity of the detectors. To reduce the coating thermal noise, coatings with excellent optical and mechanical properties are needed. In this review, an overview of postdeposition coating treatments and the latest worldwide research activities on coatings with low mechanical loss and low optical absorption are reported. A brief overview of coating design optimization, including innovative solutions such as multimaterial coatings and nanolayers, is also discussed.

Original language	English
Number of pages	14
Journal	Advanced Photonics Research
DOIs	https://doi.org/10.1002/adpr.202400117
Publication status	Published - 1 Mar 2025

Keywords

gravitational-wave detectors
internal friction
loss angle
optical absorption
optical coatings
refractive index
thermal noise
HFO2 THIN-FILMS
MECHANICAL LOSS
OPTICAL-ABSORPTION
AMORPHOUS-SILICON
ATOMIC-STRUCTURE
THERMAL NOISE
INTERNAL-FRICTION
CRYSTALLIZATION
REDUCTION
NITRIDE

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title = "Mirror Coating Research and Developments for Current and Future Gravitational-Wave Detectors",

abstract = "In current and future gravitational-wave detectors, thermal noise from mirror coatings limits the sensitivity of the detectors. To reduce the coating thermal noise, coatings with excellent optical and mechanical properties are needed. In this review, an overview of postdeposition coating treatments and the latest worldwide research activities on coatings with low mechanical loss and low optical absorption are reported. A brief overview of coating design optimization, including innovative solutions such as multimaterial coatings and nanolayers, is also discussed.",

keywords = "gravitational-wave detectors, internal friction, loss angle, optical absorption, optical coatings, refractive index, thermal noise, HFO2 THIN-FILMS, MECHANICAL LOSS, OPTICAL-ABSORPTION, AMORPHOUS-SILICON, ATOMIC-STRUCTURE, THERMAL NOISE, INTERNAL-FRICTION, CRYSTALLIZATION, REDUCTION, NITRIDE",

author = "Alex Amato and Michele Magnozzi and Janis Wohler",

year = "2025",

month = mar,

day = "1",

doi = "10.1002/adpr.202400117",

language = "English",

journal = "Advanced Photonics Research",

issn = "2699-9293",

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T1 - Mirror Coating Research and Developments for Current and Future Gravitational-Wave Detectors

AU - Amato, Alex

AU - Magnozzi, Michele

AU - Wohler, Janis

PY - 2025/3/1

Y1 - 2025/3/1

N2 - In current and future gravitational-wave detectors, thermal noise from mirror coatings limits the sensitivity of the detectors. To reduce the coating thermal noise, coatings with excellent optical and mechanical properties are needed. In this review, an overview of postdeposition coating treatments and the latest worldwide research activities on coatings with low mechanical loss and low optical absorption are reported. A brief overview of coating design optimization, including innovative solutions such as multimaterial coatings and nanolayers, is also discussed.

AB - In current and future gravitational-wave detectors, thermal noise from mirror coatings limits the sensitivity of the detectors. To reduce the coating thermal noise, coatings with excellent optical and mechanical properties are needed. In this review, an overview of postdeposition coating treatments and the latest worldwide research activities on coatings with low mechanical loss and low optical absorption are reported. A brief overview of coating design optimization, including innovative solutions such as multimaterial coatings and nanolayers, is also discussed.

KW - gravitational-wave detectors

KW - internal friction

KW - loss angle

KW - optical absorption

KW - optical coatings

KW - refractive index

KW - thermal noise

KW - HFO2 THIN-FILMS

KW - MECHANICAL LOSS

KW - OPTICAL-ABSORPTION

KW - AMORPHOUS-SILICON

KW - ATOMIC-STRUCTURE

KW - THERMAL NOISE

KW - INTERNAL-FRICTION

KW - CRYSTALLIZATION

KW - REDUCTION

KW - NITRIDE

U2 - 10.1002/adpr.202400117

DO - 10.1002/adpr.202400117

M3 - Article

SN - 2699-9293

JO - Advanced Photonics Research

JF - Advanced Photonics Research

ER -

Mirror Coating Research and Developments for Current and Future Gravitational-Wave Detectors

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Keywords

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