Mode coupling in arrays of Al nanoparticles

Описание

Тип публикации: статья из журнала

Год издания: 2020

Идентификатор DOI: 10.1016/j.jqsrt.2020.106961

Ключевые слова: Aluminum, Plasmonics, Surface lattice resonances

Аннотация: The mechanisms of coupling between the lattice modes of a two-dimensional (2D) array consisting of Al nanoparticles and the localized modes of individual Al nanoparticles have been studied in detail. The results were obtained employing the finite-difference time-domain method (FDTD) and the generalized Mie theory. It was shown thatПоказать полностьюinteractions of single particles with 2D lattice modes significantly change the extinction spectra depending on the particle radius and the lattice period. The Rayleigh anomalies of higher orders contribute to formation of hybrid modes resulting in increase of the extinction efficiency in short wavelength range of the spectrum. It was shown that high intensity magnetic modes are excited in aluminum nanoparticles arrays. The patterns of spatial electromagnetic field distribution at the frequencies of hybrid modes have been studied. We note that comprehensive understanding the mode coupling mechanisms in arrays paves the way for engineering different types of modern photonic devices with controllable optical properties. © 2020 Elsevier Ltd

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Издание

Журнал: Journal of Quantitative Spectroscopy and Radiative Transfer

Выпуск журнала: Vol. 248

Номера страниц: 106961

ISSN журнала: 00224073

Издатель: Elsevier Ltd

Авторы

  • Ershov Alexander E. (Inst Computat Modeling SB RAS, Akademgorodok 50,Bld 44, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Krasnoyarsk 660041, Russia)
  • Gerasimov Valeriy S. (Inst Computat Modeling SB RAS, Akademgorodok 50,Bld 44, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Krasnoyarsk 660041, Russia)
  • Bikbaev Rashid G. (Siberian Fed Univ, Krasnoyarsk 660041, Russia; Fed Res Ctr KSC SB RAS, LV Kirensky Inst Phys, Krasnoyarsk 660036, Russia)
  • Polyutov Sergey P. (Siberian Fed Univ, Krasnoyarsk 660041, Russia)
  • Karpov Sergey (Siberian Fed Univ, Krasnoyarsk 660041, Russia; Fed Res Ctr KSC SB RAS, LV Kirensky Inst Phys, Krasnoyarsk 660036, Russia; Siberian State Univ Sci & Technol, Krasnoyarsk 660014, Russia)

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