Engineering nanoparticles with pure high-order multipole scattering

Vladimir A. Zenin*, Cesar E. Garcia-Ortiz, Andrey B. Evlyukhin*, Yuanqing Yang, Radu Malureanu, Sergey M. Novikov, Victor Coello, Boris N. Chichkov, Sergey I. Bozhevolnyi, Andrei V. Lavrinenko, N. Asger Mortensen

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

The ability to control scattering directionality of nanoparticles is in high demand for many nanophotonic applications. One of the challenges is to design nanoparticles producing pure high-order multipole scattering (e.g., octopole, hexadecapole), whose contribution is usually negligible compared to strong low-order multipole scattering (i.e., dipole or quadrupole). Here we present an intuitive way to design such nanoparticles by introducing a void inside them. We show that both shell and ring nanostructures allow regimes with nearly pure high-order multipole scattering. Experimentally measured scattering diagrams from properly designed silicon rings at near-infrared wavelengths (~ 800 nm) reproduce well scattering patterns of an electric octopole and magnetic hexadecapole. Our findings advance significantly inverse engineering of nanoparticles from given complex scattering characteristics, with possible applications in biosensing, optical metasurfaces, and quantum communications.
Original languageEnglish
JournalA C S Photonics
Volume7
Issue number4
Pages (from-to)1067-1075
ISSN2330-4022
DOIs
Publication statusPublished - 2020

Keywords

  • Multipole decomposition
  • All-dielectric nanoparticles
  • Scattering diagram
  • Octopole
  • Hexadecapole

Cite this

Zenin, V. A., Garcia-Ortiz, C. E., Evlyukhin, A. B., Yang, Y., Malureanu, R., Novikov, S. M., Coello, V., Chichkov, B. N., Bozhevolnyi, S. I., Lavrinenko, A. V., & Mortensen, N. A. (2020). Engineering nanoparticles with pure high-order multipole scattering. A C S Photonics, 7(4), 1067-1075. https://doi.org/10.1021/acsphotonics.0c00078