Study on electro-optic noise in crystalline coatings toward future gravitational wave detectors

Study on electro-optic noise in crystalline coatings toward future gravitational wave detectors
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针对未来引力波探测器的晶体涂层中的电光噪声研究

DOI:
10.1103/physrevd.107.022003
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发表时间:
2023
期刊:
影响因子:
5
通讯作者:
Ballmer, Stefan W.
Ballmer, Stefan W.
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Tanioka, Satoshi;Vander-Hyde, Daniel;Cole, Garrett D.;Penn, Steven D.;Ballmer, Stefan W.

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高反射率反射镜涂层中的热噪声是地基引力波探测器的一个限制因素。减少这种涂层热噪声可以提高探测器的灵敏度,丰富观测运行的科学成果。晶体砷化镓和铝合金砷化镓(简称AlGaAs)涂层是未来引力波探测器升级的有希望的涂层候选者,因为它们的低涂层热噪声。然而,AlGaAs基晶体涂层可能易受电场波动引起的电光噪声的影响。我们使用法布里-珀罗腔研究了AlGaAs涂层中的电光效应,并得出结论,噪声水平远低于当前和计划中的引力波探测器的灵敏度。
Thermal noise in high-reflectivity mirror coatings is a limiting factor in ground-based gravitational wave detectors. Reducing this coating thermal noise improves the sensitivity of detectors and enriches the scientific outcome of observing runs. Crystalline gallium arsenide and aluminum-alloyed gallium arsenide (referred to as AlGaAs) coatings are promising coating candidates for future upgrades of gravitational wave detectors because of their low coating thermal noise. However, AlGaAs-based crystalline coatings may be susceptible to an electro-optic noise induced by fluctuations in an electric field. We investigated the electro-optic effect in an AlGaAs coating by using a Fabry-Perot cavity, and concluded that the noise level is well below the sensitivity of current and planned gravitational-wave detectors.
直接测量光学谐振腔中的涂层热噪声
DOI: --
发表时间: 2018
期刊: Physical Review D
影响因子: 5
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