Revealing topological phase in Pancharatnam–Berry metasurfaces using mesoscopic electrodynamics

• Main Authors: Gao Zhanjie, Golla Sandeep, Sawant Rajath, Osipov Vladimir, Briere Gauthier, Vezian Stephane, Damilano Benjamin, Genevet Patrice, Dorfman Konstantin E.
• Format: Article
• Language: English
• Published: De Gruyter 2020-09-01
• Series: Nanophotonics
• Subjects: mesoscopic electrodynamics; metasurface; pancharatnam–berry phase
• Online Access: https://doi.org/10.1515/nanoph-2020-0365
• ISSN: 2192-8606; 2192-8614

Relying on the local orientation of nanostructures, Pancharatnam–Berry metasurfaces are currently enabling a new generation of polarization-sensitive optical devices. A systematical mesoscopic description of topological metasurfaces is developed, providing a deeper understanding of the physical mechanisms leading to the polarization-dependent breaking of translational symmetry in contrast with propagation phase effects. These theoretical results, along with interferometric experiments contribute to the development of a solid analytical framework for arbitrary polarization-dependent metasurfaces.