用于空间引力波观测的回链式法布里-珀罗干涉仪
A back-linked Fabry-Perot interferometer for space-borne gravitational wave observations
AI总结：
本文提出回链式法布里-珀罗干涉仪，无需精密腔长控制即可实现激光相位噪声离线扣除，并分析其在分赫兹频段可达7×10⁻²³ Hz⁻¹ᐟ²的应变灵敏度，为空间低频引力波探测提供新方案。
摘要：
对频率低于10 Hz的引力波进行直接观测，将在充分发挥引力波天文学潜力方面起到关键作用。推进这一方向的一种途径，是在空间中使用配备法布里-珀罗光学腔的激光干涉仪。然而，这条路径在实践中面临诸多挑战。尤其是腔长的精密控制实现以及激光相位噪声的抑制，可能阻碍实际探测器设计。为规避这些困难，我们提出一种新的干涉仪拓扑结构，称为回链式法布里-珀罗干涉仪，其中不需要精密长度控制，并且可以方便地应用激光相位噪声的离线扣除方案。本文介绍了其原理构想及相应的灵敏度分析。尽管存在额外噪声，在分赫兹频段仍可能实现$7\ imes 10^{-23}$ Hz$^{-1/2}$的应变灵敏度。为了为其实施铺平道路，还必须开展若干技术发展和研究。
英文摘要：
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.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
