Presentation
3 October 2022 Excitation of magnetic quadrupole via structured lights
Author Affiliations +
Abstract
In contrast to the conventional Gaussian beams or plane waves, the interaction of structured lights with matter and meta-matter can pave the way toward novel optical effects such as exciting higher order multipolar moments or enabling nonradiating anapole states. In this work, Laguerre-Gaussian (LG) beams with various orbital angular momentum are used to excite and control the spectral location of the magnetic quadrupole modes within the all-dielectric meta-atoms. To experimentally validate this phenomenon, silicon-based meta-atoms are fabricated and illuminated by various LG beams. The experimental results are in good agreement with the theoretical predictions.
Conference Presentation
© (2022) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Hooman Barati Sedeh, Danilo G. Pires, Nitish Chandra, Pavel D. Terekhov, Jiannan Gao, Ivan I. Kravchenko, and Natalia M. Litchinitser "Excitation of magnetic quadrupole via structured lights", Proc. SPIE PC12195, Metamaterials, Metadevices, and Metasystems 2022, PC121950M (3 October 2022); https://doi.org/10.1117/12.2635720
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KEYWORDS
Structured light

Magnetism

Light-matter interactions

Nanostructures

Numerical simulations

Particles

Remote sensing

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