Work

Fano-resonant filtering by planar chromium-based multilayer stacks

Year: 2025

Type: article

Abstract: We demonstrate the design, fabrication, and experimental characterization of planar chromium-based metal-dielectric (Cr-MD) multilayer stacks that support sharp angular and spectral filtering via Fano-type resonances. Two configurations are investigated, differing in the sequence of dielectric layers above a chromium film. Under total internal reflection conditions, hybrid Tamm-waveguide modes yield bright and dark Fano resonances with angular widths of about 0.5 mrad. The high-contrast passband and stopband features are achieved, tunable via Cr thickness. Chromium's unique optical response enables broadband Tamm resonances, providing a compact platform for advanced optical filters. Potential applications include laser spatial mode control, optical sensing, and Raman spectroscopy.

Source: Optics Letters

DOI: 10.1364/ol.569973

Authors: S. Ilchenko, A. Belosludtsev, I. Bitinaitis, V. Panasyuk, V. Taranenko

Institutions: National Academy of Sciences of Ukraine, Center for Physical Sciences and Technology

Language: English

Topic: Metamaterials and Metasurfaces Applications

Subfield: Electronic, Optical and Magnetic Materials

Field: Materials Science

Domain: Physical Sciences

Open Access status: gold

OpenAlex ID: W4415243291

FWCI: 0.162

Cites: 24

Cited by: 1

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