Demonstration of the Multimaterial Coating Concept to Reduce Thermal Noise in Gravitational-Wave Detectors.
Demonstration of the Multimaterial Coating Concept to Reduce Thermal Noise in Gravitational-Wave Detectors.
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演示用于降低引力波探测器热噪声的多材料涂层概念。
DOI：
10.1103/physrevlett.125.011102
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发表时间：
2020
影响因子：
8.6
通讯作者：
I. Martin
中科院分区：
文献类型：
--
作者：
S. Tait;J. Steinlechner;M. Kinley;P. Murray;J. Hough;G. McGhee;Felix Pein;S. Rowan;R. Schnabel;Cassady Smith;L. Terkowski;I. Martin
与当前高反射镜涂层机械损耗相关的热噪声是限制引力波探测器灵敏度的一个关键因素。几种替代涂层材料显示出降低热噪声的潜力，但由于其高光学吸收而不能使用。已经提出了多材料涂层，以使这些材料的使用能够减少热噪声，同时最大限度地减少它们对镜面涂层总吸收的影响。在这里，我们通过将aSi集成到高反射SiO_{2}和Ta_{2}O_{5}多层涂层中，提出了多材料概念的实验验证。我们展示了显著的热噪声改善，并展示了一致的光学和机械性能。多材料涂层在热处理中幸存下来，以尽量减少aSi层的吸收，并且没有三种材料不同的热机械性能的不利影响。
Thermal noise associated with the mechanical loss of current highly reflective mirror coatings is a critical limit to the sensitivity of gravitational-wave detectors. Several alternative coating materials show potential for reducing thermal noise, but cannot be used due to their high optical absorption. Multimaterial coatings have been proposed to enable the use of such materials to reduce thermal noise while minimizing their impact on the total absorption of the mirror coating. Here we present experimental verification of the multimaterial concept, by integrating aSi into a highly reflective SiO_{2} and Ta_{2}O_{5} multilayer coating. We show a significant thermal noise improvement and demonstrate consistent optical and mechanical performance. The multimaterial coating survives the heat treatment required to minimize the absorption of the aSi layers, with no adverse effects from the different thermomechanical properties of the three materials.
吸收率极低的非晶硅：克服引力天文学中的热噪声。
影响因子：
8.6
作者：
Birney R
通讯作者：
Birney R
影响因子：
2.1
作者：
Duncan A. Brown;K. Vahi;M. Taufer;Von Welch;E. Deelman;Lorena A. Barba;George K. Thiruvathukal
通讯作者：
Duncan A. Brown;K. Vahi;M. Taufer;Von Welch;E. Deelman;Lorena A. Barba;George K. Thiruvathukal