Open AccessЭлементарный излучатель, расположенный на границе или внутри слоистой структуры
Author(s) -
А.Б. Петрин
Publication year - 2020
Publication title -
žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-748X
pISSN - 0044-4642
DOI - 10.21883/os.2020.11.50171.168-20
Subject(s) - dipole , moment (physics) , directivity , surface (topology) , radiation , boundary (topology) , point (geometry) , boundary value problem , method of moments (probability theory) , plane (geometry) , radiation properties , physics , optics , free space , computational physics , classical mechanics , geometry , mathematical analysis , mathematics , quantum mechanics , computer science , antenna (radio) , telecommunications , statistics , estimator
A rigorous theory of radiation from an elementary dipole located at the boundary or inside a plane-layered structure is considered. For a specific case of radiation from a dipole located at the free boundary of one film, a method of analytical simplification of the solution is demonstrated. This method made it possible to reduce the formulas for the emitted fields to one-dimensional integrals, which greatly simplified the analysis of the problem and accelerated the numerical calculations. As a specific technical application of the theory, the directivity patterns of point emitters (molecules, nanostructures) located on the free surface of a metal film in the Kretschman scheme and having an induced dipole moment along the film surface were obtained. The influence of the surface wave on the directional properties of the radiators is determined.