Photonic topological transitions for surface waves with resonant plasmonic metasurfaces: interplay between meta-atom and lattice stretching (opens in new tab)

The optical resonances of plasmonic metasurfaces can have a significant impact on the ability to control the light properties. In particular, resonant plasmonic metasurfaces exhibit photonic topological transitions, leading to sharp transformations in the topology of the isofrequency contours in reciprocal lattice space. For instance, elliptical contours can transform into hyperbolic ones, and vice versa, significantly altering the wavefront and properties of the propagating light. This trans...