arXiv.svg (5.58 kB)
Slow and fast light enhanced light drag in a moving microcavity
preprintposted on 2023-11-30, 18:27 authored by Tian Qin, Jianfan Yang, Fangxing Zhang, Yao Chen, Dongyi Shen, Wei Liu, Lei Chen, Yuanlin Zheng, Xianfeng Chen, Wenjie Wan
Fizeau experiment, inspiring Einstein's special theory of relativity, reveals a small dragging effect of light inside a moving medium. Dispersion can enhance such light drag according to Lorentz's predication. Here we experimentally demonstrate slow and fast light enhanced light drag in a moving optical microcavity through stimulated Brillouin scattering induced transparency and absorption. The strong dispersion provides an enhancement factor up to ~10^4, greatly reducing the system size down to the micrometer range. These results may offer a unique platform for a compact, integrated solution to motion sensing and ultrafast signal processing applications.