Surface plasmons propagation along metallic rough diffraction gratings

Hugo Bruhier; Isabelle Verrier; Thiaka Gueye; Christelle Varenne; Amadou Ndiaye; Olivier Parriaux; Colette Veillas; Stéphanie Reynaud; Jérôme Brunet; Yves Jourlin

doi:10.1117/12.2620944

24 May 2022 Surface plasmons propagation along metallic rough diffraction gratings

Hugo Bruhier, Isabelle Verrier, Thiaka Gueye, Christelle Varenne, Amadou Ndiaye, Olivier Parriaux, Colette Veillas, Stéphanie Reynaud, Jérôme Brunet, Yves Jourlin

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Proceedings Volume 12131, Nanophotonics IX; 1213103 (2022) https://doi.org/10.1117/12.2620944
Event: SPIE Photonics Europe, 2022, Strasbourg, France

Abstract

In this work, the effect of roughness on surface plasmon propagation along metallic gratings is investigated. In the case of a shallow sinusoidal grating, modeling that takes into account the surface roughness shows the modification of the coupling properties of the plasmon modes. In the case of a deep sinusoidal rough grating, modeling of the SPR response is compared to the experimental one, showing a strengthening of the intra-coupling between forward and backward plasmon modes. This study demonstrates that the effect of the surface roughness on plasmon propagation must be considered especially in the case of deep gratings.

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Hugo Bruhier, Isabelle Verrier, Thiaka Gueye, Christelle Varenne, Amadou Ndiaye, Olivier Parriaux, Colette Veillas, Stéphanie Reynaud, Jérôme Brunet, and Yves Jourlin "Surface plasmons propagation along metallic rough diffraction gratings", Proc. SPIE 12131, Nanophotonics IX, 1213103 (24 May 2022); https://doi.org/10.1117/12.2620944

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