Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
O: Fachverband Oberflächenphysik
O 12: Nanostructures at Surfaces I
O 12.2: Vortrag
Montag, 17. März 2025, 15:15–15:30, H6
Directing far- and nearfield scattering with dielectric Mie Voids — •Benjamin Reichel1, Mario Hentschel1, Adrià Canós Valero2, Thomas Weiss2, and Harald Giessen1 — 14th Physics Institute and Research Center SCoPE, University of Stuttgart, 70569 Stuttgart, Germany — 2Institute of Physics, University of Graz, and NAWI Graz, Graz 8010, Austria
Controlling the behavior of light at the nanoscale is a significant challenge in various applications such as metadevices, diffraction gratings, and resonant surfaces. Recently, Mie voids created in high-index dielectric host materials have emerged as a promising platform for confining electromagnetic waves in small values, possibly extending down to ultraviolet wavelengths in air. Therefore understanding and theoretical modeling the electromagnetic scattering behavior of Mie voids are crucial for their effective use.
In this study, we perform a spectral multipolar decomposition for the far- and near-field scattering behavior of dielectric Mie voids upon plane wave or local point dipole illumination. Dielectric Mie voids exhibit strong forward far-field scattering behavior, whereas in the near-field strong backscattering behavior is observed. These insights will be important in the development of resonance and meta structure designs, especially when deriving a generalized Kerker condition. Finally, leveraging the full resolution of electromagnetic Mie voids will open avenues for embedding quantum emitters in high index substrates.
Keywords: Mie Voids; generalized Kerker effect; Penetration; Electromagnetic scattering; Angular distribution