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Tytuł:
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Directional control of the off-normal scattering from a single nanodisk by superposed linearly and radially polarized beams.
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Autorzy:
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Fu Y
Wang X
Xing Z
Liu W
Cheng J
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Źródło:
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Applied optics [Appl Opt] 2021 Oct 10; Vol. 60 (29), pp. 9205-9212.
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Typ publikacji:
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Journal Article
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Język:
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English
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Imprint Name(s):
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Publication: Washington, DC : Optica Publishing Group
Original Publication: Easton, Pa., Optical Society of America.
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Entry Date(s):
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Date Created: 20211008 Latest Revision: 20211011
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Update Code:
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20240104
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DOI:
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10.1364/AO.438659
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PMID:
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34624003
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A scheme to dynamically control the off-axis directional scattering from a silicon nanodisk is proposed, which is based on focused fields formed by the coherent superposition of radially and linearly polarized beams. When the phase condition of the generalized Kerker conditions is satisfied at a specified wavelength, the amplitude requirement for the off-axis directional scattering along a required direction can be fulfilled by tuning the magnitude ratio of the two focused beams. Therefore, directional control of the off-axis scattering in the meridional plane is achieved without the manipulation of the working wavelength. Our findings provide new possibilities of future potential applications of all-dielectric nanoantennas.