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


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
Issue number11
Pages (from-to)4238-4243
Publication statusPublished - 1 Jan 2018


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


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