高阶拉盖尔高斯模在未来引力波探测器中的应用前景
Prospects of higher-order Laguerre Gauss modes in future gravitational wave detectors
摘要：
最近有人提出将高阶拉盖尔高斯（LG）模应用于大型引力波探测器。与基模相比，一些高阶拉盖尔高斯模可以显著降低涂层布朗噪声的贡献。使用频域仿真，我们给出了一个详细的分析与LG33模式的基本TEM 00模式相比，得出的纵向和角度控制信号。发现关于LG 33模式的干涉感测和控制的性能是相似的，如果不是在感兴趣的所有方面甚至更好的话。此外，我们评估的灵敏度增益的LG33模式到先进的处女座仪器的实施。我们的分析表明，LG 33模式的应用结果在一个宽带的改进先进室女座灵敏度，增加了潜在的探测率的二元中子星吸气的一个因素2.1。
英文摘要：
The application of higher-order Laguerre Gauss (LG) modes in large-scale gravitational wave detectors has recently been proposed. In comparison to the fundamental mode, some higher-order Laguerre Gauss modes can significantly reduce the contribution of coating Brownian noise. Using frequency domain simulations we give a detailed analysis of the longitudinal and angular control signals derived with a LG33 mode in comparison to the fundamental TEM00 mode. The performance regarding interferometric sensing and control of the LG33 mode is found to be similar, if not even better in all aspects of interest. In addition, we evaluate the sensitivity gain of the implementation of LG33 modes into the Advanced Virgo instrument. Our analysis shows that the application of the LG33 mode results in a broadband improvement of the Advanced Virgo sensitivity, increasing the potential detection rate of binary neutron star inspirals by a factor 2.1.
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