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Toroidal dipolar excitations in all-dielectric nanostructures

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Date

2020

Authors

Xu, Lei
Saadabad, Reza
Cai, Marcus
Miroshnichenko, Andrey

Journal Title

Journal ISSN

Volume Title

Publisher

IOP Publishing

Abstract

We have numerically investigated toroidal dipolar excitation at optical frequencies in Si nanostructures. Our results show that, through either special structured pump illumination, or by adding an additional layer associated with geometric tuning, we are able to excite strong toroidal dipolar responses with suppressed electric dipolar excitations. These findings may further pave the way to exploit future applications of toroidal resonances including optical nonlinear enhancement, induced transparency for narrow-band filter, etc.

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Keywords

Citation

URI

http://hdl.handle.net/1885/217298

Collections

ANU Research Publications

Source

Type

Conference paper

Book Title

4th International Conference on Metamaterials and Nanophotonics, METANANO 2019

Entity type

Access Statement

Open Access

License Rights

Creative Commons Attribution 3.0 licence

DOI

10.1088/1742-6596/1461/1/012191

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