Folding gravitational-wave interferometers

J. R. Sanders; Stefan W. Ballmer

doi:10.1088/1361-6382/34/2/025003

Folding gravitational-wave interferometers

J. R. Sanders, Stefan W. Ballmer

Department of Physics

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

2 Scopus citations

Abstract

The sensitivity of kilometer-scale terrestrial gravitational wave interferometers is limited by mirror coating thermal noise. Alternative interferometer topologies can mitigate the impact of thermal noise on interferometer noise curves. In this work, we explore the impact of introducing a single folding mirror into the arm cavities of dual-recycled Fabry-Perot interferometers. While simple folding alone does not reduce the mirror coating thermal noise, it makes the folding mirror the critical mirror, opening up a variety of design and upgrade options. Improvements to the folding mirror thermal noise through crystalline coatings or cryogenic cooling can increase interferometer range by as much as a factor of two over the Advanced LIGO reference design.

Original language	English (US)
Article number	025003
Journal	Classical and Quantum Gravity
Volume	34
Issue number	2
DOIs	https://doi.org/10.1088/1361-6382/34/2/025003
State	Published - Jan 19 2017

Keywords

gravitational waves
interferometry
thermal noise

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1088/1361-6382/34/2/025003

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title = "Folding gravitational-wave interferometers",

abstract = "The sensitivity of kilometer-scale terrestrial gravitational wave interferometers is limited by mirror coating thermal noise. Alternative interferometer topologies can mitigate the impact of thermal noise on interferometer noise curves. In this work, we explore the impact of introducing a single folding mirror into the arm cavities of dual-recycled Fabry-Perot interferometers. While simple folding alone does not reduce the mirror coating thermal noise, it makes the folding mirror the critical mirror, opening up a variety of design and upgrade options. Improvements to the folding mirror thermal noise through crystalline coatings or cryogenic cooling can increase interferometer range by as much as a factor of two over the Advanced LIGO reference design.",

keywords = "gravitational waves, interferometry, thermal noise",

author = "Sanders, {J. R.} and Ballmer, {Stefan W.}",

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AU - Ballmer, Stefan W.

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N2 - The sensitivity of kilometer-scale terrestrial gravitational wave interferometers is limited by mirror coating thermal noise. Alternative interferometer topologies can mitigate the impact of thermal noise on interferometer noise curves. In this work, we explore the impact of introducing a single folding mirror into the arm cavities of dual-recycled Fabry-Perot interferometers. While simple folding alone does not reduce the mirror coating thermal noise, it makes the folding mirror the critical mirror, opening up a variety of design and upgrade options. Improvements to the folding mirror thermal noise through crystalline coatings or cryogenic cooling can increase interferometer range by as much as a factor of two over the Advanced LIGO reference design.

AB - The sensitivity of kilometer-scale terrestrial gravitational wave interferometers is limited by mirror coating thermal noise. Alternative interferometer topologies can mitigate the impact of thermal noise on interferometer noise curves. In this work, we explore the impact of introducing a single folding mirror into the arm cavities of dual-recycled Fabry-Perot interferometers. While simple folding alone does not reduce the mirror coating thermal noise, it makes the folding mirror the critical mirror, opening up a variety of design and upgrade options. Improvements to the folding mirror thermal noise through crystalline coatings or cryogenic cooling can increase interferometer range by as much as a factor of two over the Advanced LIGO reference design.

KW - gravitational waves

KW - interferometry

KW - thermal noise

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Folding gravitational-wave interferometers

Abstract

Keywords

ASJC Scopus subject areas

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