Paper: 2012 Phase resolved near-field mode imaging for the design of frequency-selective surfaces

Phase resolved near-field mode imaging for the design of frequency-selective surfaces

Reviews and HighlightsQuantum ScienceMolecular and Soft-matterUltrafast Nano-optics and NanophotonicsMineralogy and Geochemistry

Edward C. Kinzel, James C. Ginn, Robert L. Olmon, David J. Shelton, Brian A. Lail, Igal Brener, Michael B. Sinclair, Markus B. Raschke, and Glenn D. Boreman
Optics Express 20, 11986 (2012).
DOI PDF

Frequency-selective surfaces (FSS) are a class of metasurfaces with engineered reflectance, absorbance, and transmittance behavior. We study an array of metallic crossed dipole FSS elements in the infrared using interferometric scattering-type scanning near-field optical microscopy (s-SNOM). We resolve the dependence of the near-field phase on the dimensions of the elements and compare with numerical models. The combined phase and amplitude information of the underlying near-field mode distribution compared to conventional far-field absorption spectroscopy greatly improves the targeted design of frequency-selective surfaces.