Crystals (Aug 2021)

Broadband Active Control of Transverse Scattering from All-Dielectric Nanoparticle

  • Huiwen Yu,
  • Hongjia Zhu,
  • Jinyang Li,
  • Zhaolong Cao,
  • Huanjun Chen

DOI
https://doi.org/10.3390/cryst11080920
Journal volume & issue
Vol. 11, no. 8
p. 920

Abstract

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Steering electromagnetic scattering by subwavelength objects is usually accompanied by the excitation of electric and magnetic modes. The Kerker effect, which relies on the precise overlapping between electric and magnetic multipoles, is a potential approach to address this challenge. However, fundamental limitations on the reconfigurability and tunability challenge their future implementation in practical applications. Here, we demonstrate a design approach by applying coherent control to a silicon nanodisk. By utilizing an experimentally feasible two-wave excitation, this coherent light-by-light control enables a highly reconfigurable, broadband, and tunable transverse scattering, extending the feasibility of unidirectional scattering in various practical scenarios, including on-chip integrations and optical communications.

Keywords