Dispersion and polarization peculiarities of surface electromagnetic waves on resonant anisotropic metasurfaces

Oleh Yermakov

Thesis proposal defense: 'Dispersion and polarization peculiarities of surface electromagnetic waves on resonant anisotropic metasurfaces'

Abstract: The miniaturization and planarization of the modern data transfer and processing technologies require tunable control over highly localized electromagnetic fields. The strong interaction of light with matter leads to the formation of a new hybrid state – surface plasmon-polariton which is a perfect candidate for the carrier of localized field. In this work, we study the multiplicity of the propagation regimes, wavefront shapes and polarization states of the surface plasmons on anisotropic, hyperbolic and self-complementary metasurfaces. We discover both theoretically and experimentally new dispersion and polarization peculiarities of the surface waves at anisotropic metasurfaces including the hybrid TE-TM polarization, simultaneous propagation of two hyperbolic plasmons, dual-directional canalization and tunable spin-directional coupling. Finally, we demonstrate the broadband polarization degeneracy of surface waves at plasmonic metasurface and guided waves at dielectric metasurface resulting paving way towards flat near-field polarization devices.