Second generation instruments for the Laser Interferometer Gravitational Wave Observatory (LIGO)
Second generation instruments for the Laser Interferometer Gravitational Wave Observatory (LIGO)
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激光干涉仪引力波天文台 (LIGO) 的第二代仪器
DOI：
10.1117/12.459090
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
P. Fritschel
中科院分区：
文献类型：
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作者：
P. Fritschel
计划用于第二代LIGO的干涉仪有望在宽带应变灵敏度上增加一个数量级——相应的探测体积增加三倍——并将观测波段扩展到更低的频率。此外，其中一个干涉仪可以设计为窄带性能，在几百赫兹以上的大约一个倍频带上进一步提高灵敏度。本文讨论了这些新型干涉仪设计的物理原理和技术，并给出了它们的投影灵敏度谱。
The interferometers being planned for second generation LIGO promise an order of magnitude increase in broadband strain sensitivity-with the corresponding cubic increase in detection volume-and an extension of the observation band to lower frequencies. In addition, one of the interferometers may be designed for narrowband performance, giving further improved sensitivity over roughly an octave band above a few hundred Hertz. This article discusses the physics and technology of these new interferometer designs, and presents their projected sensitivity spectra.