AI 中文总结
介绍一种用射频象限光电探测器感测腔模式失配与对准的方案，依赖柱面透镜和古依相位望远镜设计，简单易与PDH锁定方案结合，能提高灵敏度、提供冗余，无射频调制时也有效，还给出相关方程并经模拟验证。
AI 中文摘要
在本文中，我们描述了一种用于感测腔的模式失配和对准的方案，该方案不需要定制传感器，仅使用象限光电探测器（QPD）。该技术简单，依赖柱面透镜和精心设计的古依相位望远镜，且易于与庞德 - 德瑞弗 - 霍尔（PDH）锁定方案一起实施。古依相位望远镜设计利用所有三个QPD来感测每个自由度，这也提高了灵敏度并提供了冗余。该技术在无射频调制情况下也有效，可在复杂光学实验中提供其他通用诊断信息。文中给出了该技术的分析概述和古依相位望远镜的通用设计方程，最后通过详细的光学模拟验证了该技术。
英文摘要
In this article we describe a scheme for sensing both the mode mismatch and alignment of a cavity which does not require custom sensors and uses only Quadrant Photo-Detectors (QPDs). The technique is simple relying upon cylindrical lenses and thoughtful Gouy phase telescope design, and is trivial to implement alongside a Pound-Drever-Hall (PDH) locking scheme. The Gouy phase telescope design utilizes all three of the QPDs to sense each degree of freedom which also increases sensitivity and provides redundancy. The technique we show also works without RF modulation, which is useful for providing other general diagnostic information in complex optical experiments. An analytical overview of the technique as well as generic design equations for the Gouy phase telescope is provided. Finally, a detailed optical simulation is presented to verify the technique.
