Experimental measurements of coating mechanical loss factors
Experimental measurements of coating mechanical loss factors
复制标题
涂层机械损失因子的实验测量
DOI：
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
P. Sneddon
中科院分区：
文献类型：
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作者：
D. Crooks;G. Cagnoli;M. Fejer;A. Gretarsson;G. Harry;J. Hough;N. Nakagawa;S. Penn;R. Route;S. Rowan;P. Sneddon
目前所有的引力波探测器都使用涂有两种不同电介质材料交替层的测试质量，以形成高反射镜。与这种涂层相关的机械耗散产生的热噪声可能对未来的探测器（如先进的LIGO）具有重要意义。我们已经测量了由SiO2（二氧化硅）和Ta2O5（钽）形成的多种类型的涂层的机械耗散。已确定的频率依赖性的耗散，考虑到热弹性损耗的贡献。
All current gravitational wave detectors use test masses coated with alternating layers of two different dielectric materials to form highly reflective mirrors. The thermal noise from mechanical dissipation associated with such coatings may be significant for future detectors such as advanced LIGO. We have measured the mechanical dissipation of a number of types of coatings formed from SiO2 (silica) and Ta2O5 (tantala). The frequency dependence of the dissipation has been determined, taking into account the contribution of thermoelastic loss.