Abstract

A dielectric nanoantenna with a relatively large refractive index possesses magnetodielectric properties that can offer the unique opportunity to tailor unidirectional scattering. Herein, we demonstrate that the interference from electric and magnetic multipoles in the silicon hollow nanodisk suppresses backscattering and enhances forward scattering of light. This concept is implemented to design a lossless dielectric collector element, which constitutes an enabling technology for applications that require backward scattering suppression, such as nanoantennas and photovoltaic devices.

© 2018 Optical Society of America

Enhancement of unidirectional forward scattering and suppression of backward scattering in hollow silicon nanoblocks

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Multiple unidirectional forward scattering of hybrid metal-dielectric nanoantenna in the near-infrared region

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Dual-band unidirectional forward scattering with all-dielectric hollow nanodisk in the visible

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Multi-wavelength unidirectional forward scattering properties of the arrow-shaped gallium phosphide nanoantenna

Jingwei Lv, Yanru Ren, Debao Wang, Xinchen Xu, Wei Liu, Jianxin Wang, Chao Liu, and Paul K Chu
J. Opt. Soc. Am. A 40(11) 2034-2044 (2023)

Designing metal-dielectric nanoantenna for unidirectional scattering via Bayesian optimization

Feifei Qin, Dasen Zhang, Zhenzhen Liu, Qiang Zhang, and Junjun Xiao
Opt. Express 27(21) 31075-31086 (2019)