Cherenkov radiation and emission of surface polaritons from charges moving paraxially outside a dielectric cylindrical waveguide

@article{Saharian2020CherenkovRA,
  title={Cherenkov radiation and emission of surface polaritons from charges moving paraxially outside a dielectric cylindrical waveguide},
  author={Aram A. Saharian and Levon Grigoryan and A. Grigorian and Hrant F. Khachatryan and Anna Kotanjyan},
  journal={Physical Review A},
  year={2020}
}
We investigate the radiation from a charged particle moving outside a dielectric cylinder parallel to its axis. It is assumed that the cylinder is immersed into a homogeneous medium. The expressions are given for the vector potential and for the electric and magnetic fields. The spectral distributions are studied for three types of the radiations: (i) Cherenkov radiation (CR) in the exterior medium, (ii) radiation on the guided modes of the dielectric cylinder, and (iii) emission of surface… 

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