Paper 13111-40
Paper 13111-40
Near-field chirality and topology of metal structures (Invited Paper)
Conv. Ctr. Room 4
Abstract
Metal structures can induce strong light-matter interactions due to their localized near fields. We discuss the chiral and topological properties of the near fields generated by plasmonic metal structures under external excitations. We find that simple metal structures can generate complex configurations of polarization singularities in both the electric and magnetic fields. These singularities carry novel chiral and topological properties that are decided by the genus (number of “holes”) of the metal structures. The results provide new mechanisms for chiral light-matter interactions and new degrees of freedom for light manipulations.
Presenter
Shubo Wang
City Univ. of Hong Kong (Hong Kong, China)
Dr. Shubo Wang is an Associate Professor in the Department of Physics at City University of Hong Kong. He received his PhD degree from the Hong Kong University of Science and Technology in 2013. He is interested in general wave physics including angular momentum, singular optics, non-Hermitian optics, metamaterials, photonic crystals, and optical forces. He has published about 50 papers in peer reviewed journals including Nature Communications, Science Advances, PNAS, Physical Review Letters and Physical Review X. He has delivered 20 invited/keynote talks at international conferences such as META, PIERS, and CLEO.