Near-zero index XUV plasmonic waveguides

Luca Assogna; Carino Ferrante; Alessandro Ciattoni; Andrea Marini

doi:10.1117/12.3022298

6 June 2024 Near-zero index XUV plasmonic waveguides

Luca Assogna, Carino Ferrante, Alessandro Ciattoni, Andrea Marini

Proceedings Volume PC12991, Nanophotonics X; PC1299120 (2024) https://doi.org/10.1117/12.3022298
Event: SPIE Photonics Europe, 2024, Strasbourg, France

Conference Poster

Abstract

The current lack of transmissive photonic components in the extreme ultraviolet (XUV) spectral range poses a challenge for guidance and confinement at micro/nano-scale. In this study, we propose a novel theoretical approach for achieving guidance of XUV radiation by leveraging the electromagnetic linear response of Titanium-Aluminum-Titanium heterostructures within this spectral range. Our findings indicate that, due to the near-zero-index properties of aluminum and titanium, effective coupling of XUV radiation with plasma oscillations occurs in these heterostructures, enabling the excitation of diverse plasmon polariton modes. Our predictions, based on the semi-analytical solution of fully vectorial Maxwell’s equations, reveal that the aluminum thickness can efficiently modulate the dispersion profile of plasmon polariton modes, allowing for nanometer-scale confinement and micrometer-scale propagation length. These results hold promise for the development of future devices enabling advanced control and manipulation of XUV radiation.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Luca Assogna, Carino Ferrante, Alessandro Ciattoni, and Andrea Marini "Near-zero index XUV plasmonic waveguides", Proc. SPIE PC12991, Nanophotonics X, PC1299120 (6 June 2024); https://doi.org/10.1117/12.3022298

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