Simulating achromatic plasmonic lenses with inverted design for improved nano-optics

Tim Käseberg; Stefanie Kroker; Bernd Bodermann

doi:10.1117/12.2673769

23 August 2023 Simulating achromatic plasmonic lenses with inverted design for improved nano-optics

Tim Käseberg, Stefanie Kroker, Bernd Bodermann

Proceedings Volume PC12619, Modeling Aspects in Optical Metrology IX; PC1261909 (2023) https://doi.org/10.1117/12.2673769
Event: SPIE Optical Metrology, 2023, Munich, Germany

Abstract

Plasmonic lenses are metastructures that use the excitation of surface plasmon polaritons in metallic nanoslits to focus light to particularly small focal spots at arbitrary distances. This facilitates possibilities for improving nano-optical methods, for example in ellipsometry. We developed two- and three-dimensional plasmonic lenses with a new inverted design that complies the fabrication process. However, plasmonic lenses show chromatic aberrations. In this contribution, we explore different approaches and limitations to expand the inverted plasmonic lens design to achromatic applications. We use numerical simulations based on the Finite Element Method to investigate in different lens geometries.

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Citation Download Citation

Tim Käseberg, Stefanie Kroker, and Bernd Bodermann "Simulating achromatic plasmonic lenses with inverted design for improved nano-optics", Proc. SPIE PC12619, Modeling Aspects in Optical Metrology IX, PC1261909 (23 August 2023); https://doi.org/10.1117/12.2673769

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KEYWORDS

Plasmonics

Lenses

Design and modelling

Nano optics

Flat optics

Fabrication

Integrated optics

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