Open AccessModes of Travelling Electromagnetic Waves within Cylinders
Author(s) -
А. А. Ковалёв
Publication year - 2020
Publication title -
sibirskij fizičeskij žurnal
Language(s) - English
Resource type - Journals
ISSN - 2541-9447
DOI - 10.25205/2541-9447-2020-15-1-90-97
Subject(s) - cylinder , physics , polar , whispering gallery wave , eigenvalues and eigenvectors , polar coordinate system , electromagnetic radiation , extinction (optical mineralogy) , mode (computer interface) , optics , whispering gallery , field (mathematics) , normal mode , computational physics , geometry , acoustics , mathematics , resonator , quantum mechanics , computer science , pure mathematics , vibration , operating system
An algorithm is proposed for numerical calculation of traveling electromagnetic wave modes for solid and hollow solid state cylinders. Complex eigenvalues are defined for angular parameters characterizing emissive modes and whispering gallery modes (WG-mode). The polar component imaginary parts of the wave vectors are found for all modes, including WG modes. The calculation is carried out for the fixed cylinder sizes. The field distributions are calculated inside the cylinders. The dependence of the mode parameters on the extinction coefficients of the cylinder material was studied. The ratio of the density of energy fluxes for the radial and polar directions shows a sharp change when passage from the emissive modes to WG modes.