Vavilov–Cherenkov radiation (CR), an electromagnetic radiation emission that occurs when a charged particle in a medium moves faster than the speed of light in the same medium, plays an important role in many areas of physics such as nuclear physics. Recently, CR has been investigated in photonics and plasmonics in the perspective of its application in velocity-dependent particle detection to enhance current particle detectors, thanks to the flexibility that offer integrated devices. In this contribution, the description of the excitation of eigenmodes in different integrated photonic and plasmonic structures by a uniformly moving charged particle is numerically presented. The CR that arise from such an interaction is described within the framework of an eigenmode analysis and validated with source and field propagation with the use of the finite-difference time-domain method. Integrated nanophotonics could provide a promising platform for the investigation of the interaction between electrons and photons on-chip.

中文翻译：

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集成纳米光子结构中的切伦科夫辐射

瓦维洛夫-切伦科夫辐射 (CR) 是一种电磁辐射发射，当介质中的带电粒子运动速度超过同一介质中的光速时会发生，它在物理学的许多领域（如核物理学）中发挥着重要作用。最近，由于提供集成设备的灵活性，CR 已在光子学和等离子体学中从其在速度相关粒子检测中的应用角度进行研究，以增强当前的粒子检测器。在这一贡献中，以数值方式描述了均匀运动的带电粒子在不同集成光子和等离子体结构中激发本征模式的过程。由这种相互作用产生的 CR 在本征模式分析的框架内进行描述，并使用有限差分时域方法通过源和场传播进行验证。集成纳米光子学可以为研究芯片上电子和光子之间的相互作用提供一个有前途的平台。