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2 August 2021 Excitation of all-dielectric meta-atoms with structured light beams
Pavel D. Terekhov, Nitish Chandra, Natalia M. Litchinitser
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Proceedings Volume 11795, Metamaterials, Metadevices, and Metasystems 2021; 117950U (2021) https://doi.org/10.1117/12.2594870
Event: SPIE Nanoscience + Engineering, 2021, San Diego, California, United States
Abstract
Structured light carrying spin and orbital angular momentum brings about new light-matter interactions in optical nanostructures. We demonstrate the possibility of using structured light beams carrying orbital angular momentum (OAM) to access resonant modes of all-dielectric meta-atoms that cannot be excited by the conventional Gaussian beam or by a plane wave. We use multipole decomposition approach to match extinction resonances with high-order multipole excitation. These results can find applications in sensing, spectroscopy, and enable new regimes of nonlinear optical interactions.
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Pavel D. Terekhov, Nitish Chandra, and Natalia M. Litchinitser "Excitation of all-dielectric meta-atoms with structured light beams", Proc. SPIE 11795, Metamaterials, Metadevices, and Metasystems 2021, 117950U (2 August 2021); https://doi.org/10.1117/12.2594870
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KEYWORDS
Structured light
Particles
Dielectrics
Gaussian beams
Light-matter interactions
Magnetism
Nanostructures
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