Open AccessMeta-Optical Chirality and Emergent Eigen-polarization Modes via Plasmon Interactions
Author(s) -
Matthew Moocarme,
Nicholas V. Proscia,
Luat T. Vuong
Publication year - 2017
Publication title -
scientific reports
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.24
H-Index - 213
ISSN - 2045-2322
DOI - 10.1038/srep40718
Subject(s) - polarization (electrochemistry) , plasmon , physics , chirality (physics) , formalism (music) , molecular physics , optics , quantum mechanics , chemistry , chiral symmetry breaking , nambu–jona lasinio model , quark , art , musical , visual arts
The response of an individual meta-atom is often generalized to explain the collective response of a metasurface in a manner that neglects the interactions between meta-atoms. Here, we study a metasurface composed of tilted achiral meta-atoms with no spatial variation of the unit cell that derives appreciable optical chirality solely from the asymmetric interactions between meta-atoms. The interactions between meta-atoms are considered to stem from the Lorentz force arising from the Larmor radiation of adjacent plasmonic resonators because their inclusion in a simple model accurately predicts the bonding/anti- bonding modes that are measured experimentally. We also experimentally observe the emergence of multiple polarization eigenmodes, among other polarization-dependent responses, which cannot be modeled with the conventional formalism of transmission matrices. Our results are vital to the precise characterization and design of metasurfaces.