التفاصيل البيبلوغرافية
| العنوان: |
Experimental observation of electromagnetic wave localization in Vogel spirals. |
| المؤلفون: |
Aubry, Geoffroy J.1 geoffroy.aubry@cnrs.fr, Razo-López, Luis A.1, Pinheiro, Felipe A.2, Mortessagne, Fabrice1 |
| المصدر: |
EPJ Web of Conferences. 10/18/2023, Vol. 287, p1-2. 2p. |
| مصطلحات موضوعية: |
*ELECTROMAGNETIC wave propagation, *LIGHT propagation, *TRANSMISSION of electromagnetic waves, *GAUSSIAN beams, *SPECTRUM analysis |
| مستخلص: |
We present experiments of microwave transport in planar Vogel spirals arrays of high permittivity dielectric constant. Despite the lack of disorder, wave transport in certain frequency regions is dominated by localized modes. We characterize these modes spatially, and find that in contrary to disorder induced Anderson localization, their radial decay does not only decay exponentially, but some modes are found to decay according to a power law or to a Gaussian profile. Nevertheless, by extracting experimentally the Thouless conductance, we find that the region where these Gaussian and power law modes exist are regions of low Thouless conductance, similarly to what is expected for Anderson localization. This study unveil the rich modal structure associated with these aperiodic point patterns, and pave the way toward a better understanding of wave localization in general. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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