Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Dual-toroidal dipole excitation on permittivity-asymmetric dielectric metasurfaces

Not Accessible

Your library or personal account may give you access

Abstract

Magnetic and electric toroidal dipoles possess interesting properties differing from traditional electric and magnetic dipoles. In order to generate both the magnetic and electric toroidal dipoles simultaneously in one single structure, a permittivity-asymmetric dielectric metasurface is proposed, which is composed of clusters of four high-index dielectric nano-disks with asymmetric permittivity distribution. These two types of toroidal dipole responses can be separately observed at different spectral positions. This study reveals that symmetry-breaking in a broad sense is crucial for exciting toroidal responses, and the proposed metasurface points to a unique routine of exciting and enhancing the toroidal responses, which may be used to realize efficient light–matter interaction in the area of meta-optics.

© 2020 Optical Society of America

Full Article  |  PDF Article
More Like This
Dual-band polarization-insensitive toroidal dipole quasi-bound states in the continuum in a permittivity-asymmetric all-dielectric meta-surface

Shilin Yu, Yusen Wang, Ziang Gao, Hao Li, Shaozhe Song, Jianguo Yu, and Tonggang Zhao
Opt. Express 30(3) 4084-4095 (2022)

Asymmetric excitations of toroidal dipole resonance and the magnetic dipole quasi-bound state in the continuum in an all-dielectric metasurface

Bin Li, Jin Yao, Han Zhu, Guoxiong Cai, and Qing Huo Liu
Opt. Mater. Express 11(7) 2359-2368 (2021)

Tailoring toroidal and magnetic dipole excitations with the same dielectric structure

Zhixin Li, Tong Wu, and Xiangdong Zhang
Opt. Lett. 44(1) 57-60 (2019)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (6)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Metrics

Select as filters


Select Topics Cancel
© Copyright 2022 | Optica Publishing Group. All Rights Reserved