Topologically Enhanced Circular Dichroism from Metasurfaces
Jiaxin Chen, Lishuan Wang, Wei Wu, Wei Cai, Huasong Liu, Mengxin Ren, Jingjun Xu
Abstract
Obtaining strong circular dichroism (CD) from planar chiral metasurfaces has been hotly pursued, to realize ultracompact circular polarizers for applications in photography, spectroscopy, and biological sensing. Many attempts have failed, due to insufficient thickness of the structures. Here the authors present efficient enhancement of the CD response from a metasurface by utilizing its topological edge state. One can foresee a direct impact of this result on engineering solutions for the applications mentioned above.
Topics & Concepts
PolarizerCircular dichroismPlanarOpticsEnhanced Data Rates for GSM EvolutionMaterials scienceDichroismPhysicsOptoelectronicsComputer scienceChemistryCrystallographyTelecommunicationsBirefringenceComputer graphics (images)Metamaterials and Metasurfaces ApplicationsPlasmonic and Surface Plasmon ResearchLiquid Crystal Research Advancements