Open AccessО фокусировке поверхностных плазмонных волн на свободной поверхности металлической пленки
Author(s) -
А.Б. Петрин
Publication year - 2019
Publication title -
žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-748X
pISSN - 0044-4642
DOI - 10.21883/os.2019.03.47378.276-18
Subject(s) - plasmon , plane wave , focus (optics) , electric field , surface wave , excitation , surface plasmon , electromagnetic field , optics , electromagnetic radiation , reflection (computer programming) , surface (topology) , plane (geometry) , physics , materials science , computer science , mathematics , geometry , quantum mechanics , programming language
The excitation and focusing of a surface plasmonic wave on the free surface of a metal film in the Kretschmann scheme have been considered based on the theory of reflection of a plane electromagnetic wave from a flat-layered structure. A method of exciting a radially convergent surface plasmonic wave is proposed. The electric-field distribution at the focus is quantitatively investigated, and the conditions for its maximization are determined. The applications of the results obtained are discussed.