Large-angle scattered light measurements for quantum-noise filter cavity design studies.
Large-angle scattered light measurements for quantum-noise filter cavity design studies.
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用于量子噪声滤波器腔设计研究的大角度散射光测量。
DOI：
10.1364/josaa.29.001722
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
J. Smith
中科院分区：
文献类型：
--
作者：
F. Magaña;R. Adhikari;V. Frolov;J. Harms;Jacqueline Lee;S. Sankar;P. Saulson;J. Smith
散射光的光学损失可能会限制量子噪声滤波腔的性能，这些腔被考虑用于升级高级激光干涉仪引力波天文台（LIGO）引力波探测器。本文介绍了成像散射仪测量的大角度散射光从两个高品质的样品光学，高反射镜和分束器。这些光学元件都是超抛光的熔融石英基板，具有二氧化硅：钽电介质涂层。它们代表了用于滤波器腔的当前最先进的光学技术。我们提出了角度分辨散射值，并整合这些来估计总散射超过测量的角度。我们发现，散射到更大角度的总积分光可以小到4 ppm。
Optical loss from scattered light could limit the performance of quantum-noise filter cavities being considered for an upgrade to the Advanced Laser Interferometer Gravitational Wave Observatory (LIGO) gravitational-wave detectors. This paper describes imaging scatterometer measurements of the large-angle scattered light from two high-quality sample optics, a high reflector and a beamsplitter. These optics are each superpolished fused silica substrates with silica:tantala dielectric coatings. They represent the current state-of-the art optical technology for use in filter cavities. We present angle-resolved scatter values and integrate these to estimate the total scatter over the measured angles. We find that the total integrated light scattered into larger angles can be as small as 4 ppm.