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Toroidal dipolar excitations in all-dielectric nanostructures

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


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...[Show more]

CollectionsANU Research Publications
Date published: 2020
Type: Conference paper
Book Title: 4th International Conference on Metamaterials and Nanophotonics, METANANO 2019
DOI: 10.1088/1742-6596/1461/1/012191
Access Rights: Open Access


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