Realistic polarizing Sagnac topology with DC readout for the Einstein Telescope
Realistic polarizing Sagnac topology with DC readout for the Einstein Telescope
复制标题
用于爱因斯坦望远镜的具有直流读数的真实偏振萨尼亚克拓扑
DOI:
10.1103/physrevd.87.096008
复制
发表时间:
2013
影响因子:
5
通讯作者:
Wang M
中科院分区:
文献类型:
--
作者:
Wang M
The Einstein Telescope (ET) is a proposed future gravitational wave detector. Its design is original, using a triangular orientation of three detectors and a xylophone configuration, splitting each detector into one high-frequency and one low-frequency system. In other aspects the current design retains the dual-recycled Michelson interferometer typical of current detectors, such as Advanced LIGO. In this paper, we investigate the feasibility of replacing the low-frequency part of the ET detectors with a Sagnac interferometer. We show that a Sagnac interferometer, using realistic optical parameters based on the ET design, could provide a similar level of radiation pressure noise suppression without the need for a signal recycling mirror and the extensive filter cavities. We consider the practical issues of a realistic, power-recycled Sagnac, using linear arm cavities and polarizing optics. In particular, we investigate the effects of nonperfect polarizing optics and propose a new method for the generation of a local oscillator field similar to the DC readout scheme of current detectors.
DOI:
--
发表时间:
2012
期刊:
影响因子:
--
作者:
H. Miao
通讯作者:
H. Miao