论文标题
尼橙色锂环谐振器中的光折射诱导的bragg散射
Photorefraction-induced Bragg scattering in cryogenic lithium niobate ring resonators
论文作者
论文摘要
我们报告了在低温温度下高Q锂（LN）环谐振器中的光疗法（PR）效应引起的腔内bragg散射。我们表明，当空腔模式受到强烈兴奋时，PR效应烙印将是一个长期寿命的周期性空间充电场。此残留场又产生了折射率调制模式，该模式极大地增强了传入探针光的背部散射，并导致选择性和可重新配置模式分割。尽管不需要用于许多应用，但这种PR诱导的Bragg散射效应可用于启用光学上可编程的光子组件。
We report intracavity Bragg scattering induced by photorefractive (PR) effect in high-Q lithium niobate (LN) ring resonators at cryogenic temperatures. We show that, when a cavity mode is strongly excited, the PR effect imprints a long-lived periodic space-charge field. This residual field in turn creates a refractive index modulation pattern that dramatically enhances the back scattering of an incoming probe light, and results in selective and reconfigurable mode splittings. This PR-induced Bragg scattering effect, despite being undesired for many applications, could be utilized to enable optically programmable photonic components.
