Topologically protected plasmonic phases in randomized aperture gratings
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Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
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Maayan Fox1,2, Yuri Gorodetski3,4,5
1Electrical and Electronics Engineering Department, 407000, Ariel, Israel.
Scientific Reports
|January 18, 2023
Abstract:
We experimentally show the excitation of surface plasmons by topologically protected diffraction from gratings with randomized periodicity. The structures are designed such that the plasmonic excitation is conditioned by the proper combination of the geometric and the dynamic phases. Accordingly, it is possible to obtain a precise interaction of the incident light signal and a specific plasmonic directional mode in a polarization dependent manner.
