Ms. Huiwen Yu Profile

Huiwen Yu

at Sun Yat-sen Univ

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Proceedings Article | 10 October 2020 Poster

Broadband coherent control of all-dielectric nanoparticle for unidirectional scattering

Huiwen Yu, Zhaolong Cao

Proceedings Volume 11556, 115560Z (2020) https://doi.org/10.1117/12.2575323

KEYWORDS: Scattering, Light scattering, Nanoparticles, Magnetism, Mie scattering, Photons, Control systems, Nanostructures, Optoelectronics, Plasmonics

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All-dielectric nanophotonics is a branch of nano-optics that studies the interaction between high-refractive-index dielectric nanoparticles and light, which enables light manipulation at nanoscale. Nano-antenna and metasurfaces are widely studied technologies for light manipulation, but they can only work under a fixed single excitation condition. Recently, we have realized that coherent control is a novel way in which two or more beams of light are used to control the interaction between light and matter. Here, we study the the silicon nano-disk illuminate by two light beams. By controlling the angle, amplitude, and phase of beams to bring about the interference between electric dipole and magnetic dipole, we realized the directional control of scattered light. We performed simulations with the individual silicon nano-disk both in the air and the oil. We believe that our work will provide a new way for light manipulation, which is of great significance for future applications.

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