Anapole: Its birth, life, and death

Svyakhovskiy, S.E.; Ternovski, V.V.; Tribelsky, M.I.

Статья опубликована в высокорейтинговом журнале

Информация о цитировании статьи получена из Web of Science, Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 сентября 2019 г.

Авторы: Svyakhovskiy Sergey E., Ternovski Vladimir V., Tribelsky Michael I.
Журнал: Optics Express
Том: 27
Номер: 17
Год издания: 2019
Издательство: Optical Society of America
Местоположение издательства: United States
Первая страница: 23894
Последняя страница: 23904
DOI: 10.1364/OE.27.023894
Аннотация: Despite the recent extensive study of the nonradiating (anapole) mode in the resonant light scattering by nanoparticles, the key questions, about the dynamics of its excitation at the leading front of the incident pulse and collapse behind the trailing edge, still remain open. We answer the questions, first, by direct numerical integration of the complete set of the Maxwell equations, describing the scattering of a rectangular laser pulse by a dielectric cylinder. The simulation shows that while the excitation and the collapse periods, both have the same characteristic time-scale, the dynamics of these processes are qualitatively different. The relaxation to the steady-state scattering at the leading front is accompanied by high-amplitude oscillatory modulations of the envelope of the basic electromagnetic oscillations, while behind the trailing edge the decay of the envelope is monotonic. Then, we present the general arguments showing that this is the case for the anapole excited in any classical system. Next, we introduce a simple, exactly integrable yet accurate, physically transparent model describing the dynamics of the anapole. The model admits generalization to a broad class of resonant phenomena and may be regarded as a complement to the commonly used Temporal Coupled-Mode Theory.
Добавил в систему: Трибельский Михаил Исаакович

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Anapole: Its birth, life, and deathстатья

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