铷原子双频拉曼增益可控反常色散和群折射率零化在超精密旋转传感中的应用
Controllable Anomalous Dispersion and Group Index Nulling via Bi-Frequency Raman Gain in Rb Vapor for application to Ultraprecision Rotation Sensing
摘要：
我们最近提出了[9]，使用快光介质来获得高精度旋转传感能力。该方案依赖于产生一个临界异常色散，在一个合适的色散介质，这是引入的萨格纳克干涉仪的武器。本文对铷蒸气中双频拉曼增益的反常色散特性进行了实验研究，目的是利用这种介质产生临界反常色散条件。外差相位测量技术用于精确测量与色散相关的折射率变化。负线性色散（或群指数）的斜率在实验上变化超过两个数量级，同时改变泵浦场之间的频率间隔，负责产生增益。利用这一结果，我们已经确定了实验参数实现零值的组指数，对应于增强旋转灵敏度所需的临界异常色散条件。
英文摘要：
We have recently proposed [9], the use of fast-light media to obtain ultrahigh precision rotation sensing capabilities. The scheme relies on producing a critically anomalous dispersion, in a suitable dispersive medium, which is introduced in the arms of a Sagnac interferometer. We present here an experimental investigation of the anomalous dispersion properties of bi-frequency Raman gain in rubidium vapor, with the goal of using this medium for producing the critically anomalous dispersion condition. A heterodyne phase measurement technique is used to measure accurately the index variation associated with the dispersion. The slope of the negative linear dispersion (or group index) is experimentally varied by more than two orders of magnitude while changing the frequency separation between pump fields, responsible for producing gain. Using this result, we have identified the experimental parameters for achieving a null value of the group index, corresponding to the critically anomalous dispersion condition necessary for enhanced rotational sensitivity.
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。
