Optimum Forward Light Scattering by Spherical and Spheroidal Dielectric Nanoparticles with High Refractive Index

By B. Lukyanchuk, N. Voshchinnikov, R. Paniagua‐Domínguez, Arseniy I. Kuznetsov. 2014

183 citations recorded by the source corpus.

High-refractive index dielectric nanoparticles may exhibit strong directional forward light scattering at visible and near-infrared wavelengths due to interference of simultaneously excited electric and magnetic dipole resonances. For a spherical particle shape, the so-called first Kerker’s condition can be realized, at which the backward scattering practically vanishes for some combination of refractive index and particle size. However, realization of Kerker’s condition for spherical particles is only possible at the tail of the scattering resonances, when the particle scatters light weakly. Here we demonstrate that significantly higher forward scattering can be realized if spheroidal particles are considered instead. For each value of refractive index n exists an optimum shape of the particle, which produces minimum backscattering efficiency together with maximum forward scattering. This effect is achieved due to the overlapping of magnetic and electric dipole resonances of the spheroidal particle at th...

Subfields: Biomedical Engineering, Electronic, Optical and Magnetic Materials

View Paper: https://www.semanticscholar.org/paper/cfdc3de180cc70ab62aefbff6c24c848ef0ec1b0

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In Biomedical Engineering

In Electronic, Optical and Magnetic Materials

Citations in the corpus

Light Scattering by a Dielectric Sphere: Perspectives on the Mie Resonances (2018, background): “Alternatively, Equations (35) and (36) provide a very simple and intuitive rule for the design of direction selective scattering sources, recently denoted as Huygens sources [4,100,104–109].”
Optically resonant dielectric nanostructures (2016, background): “By changing the geometrical parameters of the particles, the spectral positions of both electric and magnetic dipole resonances can be tuned independently, interchanging or overlapping spectrally at a single frequency for simple geometries (11, 12, 15).”