Strong asymmetry of forward scattering effect from dielectric cubic nanoantenna in lossless media

Pavel D. Terekhov, Hadi K. Shamkhi, Egor Gurvitz, Kseniia Baryshnikova, Andrey B. Evlyukhin, Alexander S. Shalin, Alina Karabchevsky

Research output: Contribution to journalArticlepeer-review

Abstract

Dielectric photonics platform provides unique possibilities to control light scattering via utilizing high-index dielectric nanoantennas with peculiar optical signatures. Despite the intensively growing field of all-dielectric nanophotonics, it is still unclear how surrounding media affect scattering properties of a nanoantenna with complex multipole response. Here we report on light scattering by a silicon cubic nanoparticles embedded in lossless media, supporting optical resonant response. We show that significant changes in the scattering process are governed by the electro-magnetic multipole resonances which experience spectral red-shift and broadening over the whole visible and near-infrared spectra as the indices of media increase. Most interestingly that the considered nanoantenna exhibits the broadband forward scattering in the visible and near-infrared spectral ranges due to the Kerker-effect in high-index media. The revealed effect of broadband forward scattering is essential for highly demanding applications in which the influence of the media is crucial such as health-care: sensing, treatment efficiency monitoring, and diagnostics. In addition, the insights from this study are expected to pave the way towards engineering the nanophotonic systems including but not limited to Huygens-metasurfaces in media within a single framework
Original languageEnglish
JournalarXiv preprint arXiv:1810.07916
DOIs
StatePublished - 18 Jan 2019

Keywords

  • Physics - Optics

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