Design and development of OAM-generating dielectric metasurfaces

Arttu Nieminen; Humeyra Caglayan

doi:10.1117/12.3016086

6 June 2024 Design and development of OAM-generating dielectric metasurfaces

Arttu Nieminen, Humeyra Caglayan

Proceedings Volume PC12990, Metamaterials XIV; PC129901M (2024) https://doi.org/10.1117/12.3016086
Event: SPIE Photonics Europe, 2024, Strasbourg, France

Conference Poster

Abstract

Conventional approaches to create optical beams with Orbital Angular Momentum (OAM) tend to rely on bulky optical systems and external laser sources, limiting their use in integrated photonics. Metasurfaces provide a solution for compact on-chip generation of OAM beams, which is crucial for the broad implementation of OAM technologies. This work will present the design and fabrication of metasurfaces consisting of amorphous silicon nanopillars on a sapphire substrate, which is used to generate OAM beams from an impinging Gaussian beam at 1250 nm wavelength.

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Arttu Nieminen and Humeyra Caglayan "Design and development of OAM-generating dielectric metasurfaces", Proc. SPIE PC12990, Metamaterials XIV, PC129901M (6 June 2024); https://doi.org/10.1117/12.3016086

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