Multiplication of polaritonic vortices via sublinear dispersion

Andrea Mancini; Haoran Ren; Stefan Maier

doi:10.1117/12.3010408

13 March 2024 Multiplication of polaritonic vortices via sublinear dispersion

Andrea Mancini, Haoran Ren, Stefan Maier

Proceedings Volume PC12896, Photonic and Phononic Properties of Engineered Nanostructures XIV; PC1289612 (2024) https://doi.org/10.1117/12.3010408
Event: SPIE OPTO, 2024, San Francisco, California, United States

Abstract

Optical vortices promise enhanced optical and quantum information processing via the orbital angular momentum multiplexing. Nanophotonics opens the possibility of realizing subwavelength optical vortices through coupling optical beams into subwavelength surface polaritons in the near-field, although the topological charge is always fixed. We report dispersion-driven topological charge multiplication by leveraging the strong sublinear dispersion of low-loss surface phonon polaritons on silicon carbide membranes, capable of switching the topological charges within a small ∼3% frequency range in the mid-infrared frequency range. This offers the possibility of all-optical ultrafast switching of optical vortices at mid-infrared frequencies.

Conference Presentation

Citation Download Citation

Andrea Mancini, Haoran Ren, and Stefan Maier "Multiplication of polaritonic vortices via sublinear dispersion", Proc. SPIE PC12896, Photonic and Phononic Properties of Engineered Nanostructures XIV, PC1289612 (13 March 2024); https://doi.org/10.1117/12.3010408

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