Synchrotron Radiation from a Charge on Eigenmodes of a Dielectric Cylinder

Abstract

The electromagnetic radiation on the eigenmodes of a dielectric waveguide is investigated for the charge rotating around a dielectric cylinder. A formula for radiation intensity at a given harmonic is obtained. The corresponding fields exponentially decay at distances from the surface of the cylinder larger than the radiation wavelength. A comparison is made for the intensities of the parts of the radiations propagating inside and outside the cylinder, as well as with the intensity of the radiation at large distances from the cylinder.