Nonlinear optical effects of sub-5 nm plasmonic nanogap metasurfaces

Sebastian Beer; Jeetendra Gour; Alessandro Alberucci; Stefan Nolte; Uwe D. Zeitner

doi:10.1117/12.3017384

11 June 2024 Nonlinear optical effects of sub-5 nm plasmonic nanogap metasurfaces

Sebastian Beer, Jeetendra Gour, Alessandro Alberucci, Stefan Nolte, Uwe D. Zeitner

Proceedings Volume PC12990, Metamaterials XIV; PC1299018 (2024) https://doi.org/10.1117/12.3017384
Event: SPIE Photonics Europe, 2024, Strasbourg, France

Abstract

Plasmonic metasurfaces with sub-5nm dielectric nano-gaps arranged in a large two-dimensional array pave the way to a huge boosting of nonlinear optical effects due to the joint action of a strong field enhancement inside the gap, together with the presence of collective radiative resonances. We studied the nonlinear emission of these metasurfaces in dependence of different gap parameters and illumination conditions. This is a step towards the experimental investigation of nonlinear effects in structures, where light-matter interaction is strongly affected by quantum effects.

Conference Presentation

Citation Download Citation

Sebastian Beer, Jeetendra Gour, Alessandro Alberucci, Stefan Nolte, and Uwe D. Zeitner "Nonlinear optical effects of sub-5 nm plasmonic nanogap metasurfaces", Proc. SPIE PC12990, Metamaterials XIV, PC1299018 (11 June 2024); https://doi.org/10.1117/12.3017384

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