论文标题
用于太空传播引力波观测的反向链接的Fabry-Perot干涉仪
A back-linked Fabry-Perot interferometer for space-borne gravitational wave observations
论文作者
论文摘要
直接观察到低于10 Hz的频率的重力波将扮演至关重要的作用，以充分利用引力波天文学的潜力。追求这一方向的一种方法是利用了配备了空间中Fabry-Perot光腔的激光干涉仪。但是，实际上，许多挑战实际上存在。特别是，实现了对腔长度的精确控制和激光相噪声的抑制可能会阻止实用的检测器设计。为了避免此类困难，我们提出了一种新的干涉仪拓扑结构，称为反向的Fabry-Perot干涉仪，其中不需要精度长度控件，并且很容易适用激光相声音的离线减法方案。本文介绍了主要思想和相关的灵敏度分析。尽管有其他噪音，但在Deci-Hertz频段中，可以实现$ 7 \ times 10^{ - 23} $ Hz $^{ - 1/2} $的应变灵敏度。必须进行几项技术发展和研究，以铺平实施的前进方向。
Direct observations of gravitational waves at frequencies below 10 Hz will play crucial roles for fully exploiting the potential of gravitational wave astronomy. One approach to pursue this direction is the utilization of laser interferometers equipped with the Fabry-Perot optical cavities in space. However, a number of challenges lie in this path practically. In particular, the implementation of precision control for the cavity lengths and the suppression of laser phase noises may prevent a practical detector design. To circumvent such difficulties, we propose a new interferometer topology, named the back-linked Fabry-Perot interferometer, where the precision length controls are not required and an offline subtraction scheme for laser phase noises is readily applicable. This article presents the principle idea and the associated sensitivity analyses. Despite additional noises, a strain sensitivity of $7\times 10^{-23}$ Hz$^{-1/2}$ may be attainable in the deci-Hertz band. Several technological developments and studies must be carried out to pave the way forward for the implementation.
