Toroidal dipole and magnetic multipole excitations from the same nanostructure with different direction of electric dipole emitters
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Author(s)
Sun, Yudan
Mu, Haiwei
Lv, Jingwei
Liu, Qiang
Liu, Chao
Sun, Jiudi
Sun, Tao
Chu, Paul K
Date Issued
February 3, 2020
Publisher
Springer Berlin Heidelberg
Citation
Applied Physics A. 2020 Feb 03;126(3):150
Version
Author's final manuscript
Abstract
Abstract
The toroidal dipole (TD) and magnetic multipole with optical response from high-index dielectric nanostructures are emerging optical nanostructures especially in the visible spectrum. However, interference of the involved multipoles is generally overlooked in the ultraviolet region. In this work, a novel nanostructure which can achieve excitations of TD, magnetic quadrupole and magnetic dipole is demonstrated by simply changing the direction of the electric dipole emitters in the wavelength range between 230 and 430 nm. Near perfect TD and magnetic excitations from the same structure are accomplished and our results also provide insights into the design and application of light nanoantennas, spectroscopy, and ultrafast light emitting devices.
MIT Department
Massachusetts Institute of Technology. Media Laboratory
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1007/s00339-020-3325-y
