Near-Field Observation of Guided-Mode Resonances on a Metasurface via Dielectric Nanosphere Excitation

Frederik Walla*, Florian Bürkle, Ivan Sinev, Matthias M. Wiecha, Nicolas Mecklenbeck, Konstantin Ladutenko, Radu Malureanu, Filipp Komissarenko, Andrei Lavrinenko, Andrey Bogdanov, Amin Soltani, Hartmut G. Roskos

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

We study laser-induced guided-mode resonances on an ultrathin anisotropic metallic metasurface using direct near-field mapping. Coupling of the incident light to the guided-mode resonances is provided by a resonant laser-printed silicon nanosphere placed on the metasurface using nanomanipulation under electron-beam supervision. To visualize the propagation of the guided modes, we employ scattering-type scanning near-field optical microscopy in the near-infrared region (850 nm). The guided-mode resonances excited by the nanosphere demonstrate vanishing anisotropy due to weak confinement at the metasurface/air interface. We also extract the wavenumber of the observed modes through Fourier transformation of the measured near-field maps and find it to be in good agreement with numerical calculations.

Original languageEnglish
JournalACS Photonics
Volume5
Issue number11
Pages (from-to)4238-4243
ISSN2330-4022
DOIs
Publication statusPublished - 1 Jan 2018

Keywords

  • Anisotropy
  • Guided-mode resonance
  • Metasurface
  • Nano-optics
  • S-SNOM
  • Surface waves

Cite this

Walla, F., Bürkle, F., Sinev, I., Wiecha, M. M., Mecklenbeck, N., Ladutenko, K., ... Roskos, H. G. (2018). Near-Field Observation of Guided-Mode Resonances on a Metasurface via Dielectric Nanosphere Excitation. ACS Photonics, 5(11), 4238-4243. https://doi.org/10.1021/acsphotonics.8b00900