Fano-like resonances in nanostructured thin films

Ceren Babayigit; Lina Grineviciute; Julianija Nikitina; Kestutis Staliunas

doi:10.1117/12.2592806

26 April 2021 Fano-like resonances in nanostructured thin films

Ceren Babayigit, Lina Grineviciute, Julianija Nikitina, Kestutis Staliunas

Proceedings Volume 11769, Metamaterials XIII; 117690L (2021) https://doi.org/10.1117/12.2592806
Event: SPIE Optics + Optoelectronics, 2021, Online Only

Abstract

In this study, we report Fano-like coupling of electromagnetic radiation to infinitely extended planar waveguiding modes of a spatially unbounded system, which specifically is a nanostructured thin film. Proposed design differs from conventional Fano-resonant systems, since conventional ones emerge from coupling to compact resonators with discrete spectrum. In this context, nanostructured thin films are explored by numerical simulations along with an analytical study, followed by the fabrication of the films by the ion beam sputtering method on nano-modulated substrates. Experimental results showed Fano-like resonances of high sensitivity to wavelength and incidence angle of the radiation. Hence, proposed design can be a potential candidate for frequency- and spatial filtering of light in transmission/reflection through/from such nanostructured thin films.

Citation Download Citation

Ceren Babayigit, Lina Grineviciute, Julianija Nikitina, and Kestutis Staliunas "Fano-like resonances in nanostructured thin films", Proc. SPIE 11769, Metamaterials XIII, 117690L (26 April 2021); https://doi.org/10.1117/12.2592806

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