Spectral dependence of the magnetic modulation of surface plasmon-polaritons in hyperbolic metasurfaces

The deposition of hyperbolic plasmonic metasurface on top of magnetic dielectric can significantly enhance the magnetic field-induced modulation of the surface plasmon polariton (SPP) wave vector. In this work, we have theoretically investigated this effect in the spectral range 660–1500 nm for Au a...

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Veröffentlicht in:Optics express 2024-11, Vol.32 (24), p.43598
Hauptverfasser: Usik, Maksim O., Kuzmin, Dmitry A., Bychkov, Igor V., Shavrov, Vladimir G.
Format: Artikel
Sprache:eng
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Zusammenfassung:The deposition of hyperbolic plasmonic metasurface on top of magnetic dielectric can significantly enhance the magnetic field-induced modulation of the surface plasmon polariton (SPP) wave vector. In this work, we have theoretically investigated this effect in the spectral range 660–1500 nm for Au and Ag-based hyperbolic metasurfaces. We have found that the effect of the magnetic field on both SPP phase shift and propagation length plays a significant role in the modulation. We conclude that the complex interplay between the evolution of the SPP properties and the magneto-optical parameter with wavelength leads to the non-monotonic behavior of the modulation. An adequate figure of merit including both SPP phase shift and change of SPP propagation distance is studied for different geometrical parameters of the metasurface, such as its periodicity and filling factor.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.539542