用于LISA的光学桁架干涉仪皮米灵敏度原型
Picometer Sensitive Prototype of the Optical Truss Interferometer for LISA
AI总结：
本研究设计开发了用于LISA望远镜的光学桁架干涉仪（OTI）原型，采用Pound-Drever-Hall方法结合光纤注入腔，实现了$1 \frac{\mathrm{pm}}{\sqrt{\mathrm{Hz}}}$的尺寸稳定性测量灵敏度，可用于望远镜验证及地面测试实验。
摘要：
光学桁架干涉仪（OTI）是为LISA望远镜提出的备选子系统，用于辅助验证$1 \frac{\mathrm{pm}}{\sqrt{\mathrm{Hz}}}$的光程长度稳定性。每台望远镜将配备三对紧凑型光纤耦合单元，每对单元在孔径周围的不同位置形成一个光腔，其基线长度与望远镜长度成正比。采用Pound-Drever-Hall方法使调制激光场与每个光腔保持共振，即可测量并验证望远镜的尺寸稳定性。我们设计并开发了OTI原型单元，通过一组可自由安装的光纤注入腔，证明其能够以$1 \frac{\mathrm{pm}}{\sqrt{\mathrm{Hz}}}$的灵敏度测量LISA望远镜这类稳定结构。除了最初的望远镜应用动机外，OTI还可轻松与其他系统集成，用于辅助地面测试实验。本文概述了我们的实验装置、测量结果以及对噪声限制的分析。
英文摘要：
The optical truss interferometer (OTI) is a contingent subsystem proposed for the LISA telescopes to aid in the verification of a $1 \frac{\mathrm{pm}}{\sqrt{\mathrm{Hz}}}$ optical path length stability. Each telescope would be equipped with three pairs of compact fiber-coupled units, each forming an optical cavity with a baseline proportional to the telescope length at different points around the aperture. Employing a Pound-Drever-Hall approach to maintain a modulated laser field on resonance with each cavity, the dimensional stability of the telescope can be measured and verified. We have designed and developed prototype OTI units to demonstrate the capability of measuring stable structures, such as the LISA telescope, with a $1 \frac{\mathrm{pm}}{\sqrt{\mathrm{Hz}}}$ sensitivity using a set of freely mountable fiber-injected cavities. Aside from its initial motivation for the telescope, the OTI can also be readily integrated with other systems to aid in ground testing experiments. In this paper, we outline our experimental setup, measurement results, and analyses of the noise limitations.
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。
