Experimental observation of 3D strong electromagnetic wave localization in Vogel spirals

Geoffroy Aubry; Luis Alberto Razo-López; Felipe A. Pinheiro; Fabrice Mortessagne

doi:10.1117/12.3022149

11 June 2024 Experimental observation of 3D strong electromagnetic wave localization in Vogel spirals

Geoffroy Aubry, Luis Alberto Razo-López, Felipe A. Pinheiro, Fabrice Mortessagne

Proceedings Volume PC12991, Nanophotonics X; PC129911F (2024) https://doi.org/10.1117/12.3022149
Event: SPIE Photonics Europe, 2024, Strasbourg, France

Abstract

Experimentally, strong localization of electromagnetic waves in three dimensions has never been achieved, despite extensive studies. Moving away from the paradigm of disordered systems, we perform microwave transport experiments in planar aperiodic Vogel spiral arrays of cylinders with high dielectric permittivity. By characterizing the electromagnetic modal structure in real space, we observe combinations of long-lived modes with Gaussian, exponential, and power law spatial decay. This distinctive modal structure, not present in conventional photonic materials with periodic or disordered structures, is the cause of significant electromagnetic wave localization that persists even in a three-dimensional environment.

Conference Presentation

Citation Download Citation

Geoffroy Aubry, Luis Alberto Razo-López, Felipe A. Pinheiro, and Fabrice Mortessagne "Experimental observation of 3D strong electromagnetic wave localization in Vogel spirals", Proc. SPIE PC12991, Nanophotonics X, PC129911F (11 June 2024); https://doi.org/10.1117/12.3022149

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