Vortex crystals with dynamic topologies

Marco Piccardo; Michael De Oliveira; Vincenzo Aglieri; Andrea Toma; Andrew Forbes; Antonio Ambrosio

doi:10.1117/12.2620326

24 May 2022 Vortex crystals with dynamic topologies

Marco Piccardo, Michael De Oliveira, Vincenzo Aglieri, Andrea Toma, Andrew Forbes, Antonio Ambrosio

Proceedings Volume PC12131, Nanophotonics IX; PC121310R (2022) https://doi.org/10.1117/12.2620326
Event: SPIE Photonics Europe, 2022, Strasbourg, France

Abstract

We demonstrate a non-Hermitian system by introducing topological dynamics in coherent laser arrays. It consists of a large set of mutually interacting optical vortices subject to arbitrary topological transformations realized by metasurfaces in a closed environment. Like atoms in a crystal, the vortices are arranged in a regular lattice producing Bragg diffraction peaks. Prior art focussed on demonstrations of single vortex sources employing concepts from non-Hermitian and topological photonics to add charge reconfigurability and to mitigate manufacturing fault effects. We extrapolate these concepts to vortex arrays that demonstrate tunability and robustness akin to those of topical single vortex sources.

Conference Presentation

Citation Download Citation

Marco Piccardo, Michael De Oliveira, Vincenzo Aglieri, Andrea Toma, Andrew Forbes, and Antonio Ambrosio "Vortex crystals with dynamic topologies", Proc. SPIE PC12131, Nanophotonics IX, PC121310R (24 May 2022); https://doi.org/10.1117/12.2620326

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