Control of light scattering by nanoparticles with optically-induced magnetic responses

Abstract

Conventional approaches to control and shape the scattering patterns of light generated by different nanostructures are mostly based on engineering of their electric response due to the fact that most metallic nanostructures support electric resonances in the optical frequency range. Recently, fuelled by the fast development in the fields of metamaterials and plasmonics, artificial optically-induced magnetic responses have been demonstrated for various nanostructures. This kind of response can be employed to provide an extra degree of freedom for the efficient control and shaping of the scattering patterns of nanoparticles and nanoantennas. Here we review the recent progress in this research direction of nanoparticle scattering shaping and control through the interference of both electric and optically-induced magnetic responses. We discuss the magnetic resonances supported by various structures in different spectral regimes, and then summarize the original results on the scattering shaping involving both electric and magnetic responses, based on the interference of both spectrally separated (with different resonant wavelengths) and overlapped dipoles (with the same resonant wavelength), and also other higher-order modes. Finally, we discuss the scattering control utilizing Fano resonances associated with the magnetic responses.

To appear in Chinese Physics B (January, 2014), as an invited review paper for the topical review column titled "Plasmonics and Metamaterials"

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• Directional visible light scattering by silicon nanoparticles
• Magnetic light
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Cited by in corpus (13)

• Generalized Kerker Effects in Nanophotonics and Meta-Optics
• Ultra-directional forward scattering by individual core-shell nanoparticles
• Generalized magnetic mirrors
• Toroidal dipole induced transparency for core-shell nanoparticles
• Invisible nanowires with interfering electric and toroidal dipoles
• Multipolar interference effects in nanophotonics
• Ultra-directional super-scattering of homogenous spherical particles with radial anisotropy
• Superscattering pattern shaping for radially anisotropic nanowires
• Elusive pure anapole excitation in homogenous spherical nanoparticles with radial anisotropy
• Experimental demonstration of linear and spinning Janus dipoles for polarisation and wavelength selective near-field coupling
• Efficient excitation and tuning of toroidal dipoles within individual homogenous nanoparticles
• Geometric interpretations for resonances of plasmonic nanoparticles
• Scattering invisibility with free-space field enhancement of all-dielectric nanoparticles