Dipole approximation for plasmonic lattices in layered structures

Ilia M. Fradkin, Sergey A. Dyakov, Nikolay A. Gippius

Результат исследований: Глава в книге, отчете, сборнике статейМатериалы для конференциирецензирование

Аннотация

Plasmonic nanoparticles lattices in a dielectric environment demonstrate exceptional optical properties due to the combination of plasmonic structures' ability to confine light in deep subwavelength scale and dielectric ones to support high-quality optical modes. However, such structures, especially in the case of the small size of plasmonic particles, are hard for the calculation by the means of the Fourier modal method (FMM) specialized for periodic structures, since their local field is described by high-k|| harmonics. We propose not to account for a large number of harmonics, but to consider the lattice in discrete dipole approximation (DDA) to construct its scattering matrix. In this work, we apply this approach for lattices with several particles in a cell. The performance of the method is demonstrated on an example of the lattice on a waveguide that supports polarization controlled coupling of circularly polarized light to guided modes propagating in opposite directions. We show the high speed and precision of our approach, which allows us to use it both for the calculation of plasmonic lattices spectra and the design of nanophotonic devices based on such lattices.

Язык оригиналаАнглийский
Название основной публикации5th International Conference on Metamaterials and Nanophotonics, METANANO 2020
РедакторыPavel Belov, Mihail Petrov
ИздательAmerican Institute of Physics Inc.
ISBN (электронное издание)9780735440340
DOI
СостояниеОпубликовано - 8 дек. 2020
Событие5th International Conference on Metamaterials and Nanophotonics, METANANO 2020 - St. Petersburg, Virtual, Российская Федерация
Продолжительность: 14 сент. 202018 сент. 2020

Серия публикаций

НазваниеAIP Conference Proceedings
Том2300
ISSN (печатное издание)0094-243X
ISSN (электронное издание)1551-7616

Конференция

Конференция5th International Conference on Metamaterials and Nanophotonics, METANANO 2020
Страна/TерриторияРоссийская Федерация
ГородSt. Petersburg, Virtual
Период14/09/2018/09/20

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