Authors
Noah Apostolico, Leander Siegle, Luca Schmid, Tim-Dominik Gómez, Julian Schwab, Mario Hentschel, Harald Giessen
Published in
Nanophotonics (Berlin, Germany). Volume 15. Issue 9. Pages e70105. Epub Apr 30, 2026.
Abstract
Although structured light has been extensively studied, its interaction with nanoscale matter has remained largely unexamined. Here, we demonstrate a symmetry-dependent interaction between structured light and nanostructured absorbers by investigating the orbital-angular-momentum-dependent extinction of gold nanodisk oligomers. Using a rigorous design framework, we fabricate diffractive optical elements via two-photon-polymerization grayscale lithography to generate three distinct flower-like beam modes. Scanning these beams across oligomers of different symmetries reveals that extinction is maximized when the beam and structure share the same rotational symmetry. A semi-analytical overlap model reproduces the observed trends with deviations consistently below 10 percentage points, confirming the robustness of the symmetry-based interaction mechanism.
PMID:
42846135
Bibliographic data and abstract were imported from PubMed on 08 Oct 2026.
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