[CWP16G] Theory and Fundamentals

[CWP16G-03] Topological surface states at C4 rotational symmetry photonic crystals bounded by air

*Anna TASOLAMPROU TASOLAMPROU¹, Maria Kafesaki¹, Costas Soukoulis¹, Eleftherios Economou¹, Thomas KOschny² (1. Institute of Electronic Structure and Laser, Foundation for Research and Technology Hellas (Greece), 2. Ames Laboratory and Department of Physics and Astronomy, Iowa State University (United States of America))

[Presentation Style] Online

We present an approach for manipulating topological states sustained at free space interfaces. Eigenvalue analysis corroborated by direct scattering simulations demonstrate the topological invariant jump, the mode's unidirectionalilty and immunity to defects and back-scattering.