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Enhanced Nonlinear Light Generation in Oligomers of Silicon Nanoparticles under Vector Beam Illuminationстатья
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: 16 сентября 2020 г.
- Авторы: Kroychuk Maria K., Shorokhov Alexander S., Yagudin Damir F., Shilkin Daniil A., Smirnova Daria A., Volkovskaya Irina, Shcherbakov Maxim R., Shvets Gennady, Fedyanin Andrey A.
- Журнал: Nano Letters
- Том: 20
- Номер: 5
- Год издания: 2020
- Издательство: American Chemical Society
- Местоположение издательства: United States
- Первая страница: 3471
- Последняя страница: 3477
- DOI: 10.1021/acs.nanolett.0c00393
- Аннотация: All-dielectric nanoparticle oligomers have recentlyemerged as promising candidates for nonlinear optical applications.Their highly resonant collective modes, however, are difficult toaccess by linearly polarized beams due to symmetry restraints. Inthis paper, we propose a new way to increase the efficiency ofnonlinear processes in all-dielectric oligomers by tightly focusedazimuthally polarized cylindrical vector beam illumination. Wedemonstrate two orders enhancement of the third-harmonicgeneration signal, governed by a collective optical moderepresented by out-of-plane magnetic dipoles. Crucially, thecollective mode is characterized by strong electromagnetic field localization in the bulk of the nonlinear material. For comparison,we measure third-harmonic generation in the same oligomer pumped with linearly and radially polarized fundamental beams, whichboth show significantly lower harmonic output. We also provide numerical analysis to describe and characterize the observed effect.Our findings open a new route to enhance and modulate the third-harmonic generation efficiency of Mie-resonant isolatednanostructures by tailoring the polarization of the pump beam.
- Добавил в систему: Шорохов Александр Сергеевич
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | NanoLett20_3471_2020.pdf | 2,9 МБ | 23 ноября 2020 [fedyanin] |