Abstract
In this work, we demonstrate a simple analytical approach to the problem of surface plasmon polaritons excitation with a metallic nanoantenna placed above a metal surface. The method uses the reciprocity theorem and is similar to the calculation of amplitudes of dielectric waveguide modes excited by a current distribution. To maximize clarity of the demonstration, we formulate the problem in a simple two-dimensional geometry. The analytical results are shown to agree well with the numerical solution obtained by finite elements in frequency domain and finite difference in time domain methods.
Highlights
[36] Dvoretckaia L, Ladutenko K, Mozharov A, Zograf G, Bogdanov A, Mukhin I
We demonstrate a simple analytical approach to the problem of surface plasmon polaritons excitation with a metallic nanoantenna placed above a metal surface
Excitation of surface plasmon waves with a nanoantenna: simple analytical solution and its numerical verification
Summary
[36] Dvoretckaia L, Ladutenko K, Mozharov A, Zograf G, Bogdanov A, Mukhin I. 2. Сравнение численных (точки) и аналитических (сплошные кривые) результатов расчёта амплитуды продольной компоненты поля ППП на поверхности металла (x = 0) на удалении 8 мкм (а) и 0 мкм (б) от начала координат, расположенного непосредственно под дипольным источником, для различных значений высоты x0 источника над плёнкой.
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