Open AccessAnalyzing the polarization response of a chiral metasurface stack by semi-analytic modeling
Author(s) -
Jan Sperrhake,
Manuel Decker,
Matthias Falkner,
Stefan Fasold,
Thomas Kaiser,
Isabelle Staude,
Thomas Pertsch
Publication year - 2019
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.27.001236
Subject(s) - stack (abstract data type) , polarization (electrochemistry) , scattering , optics , physics , transmission (telecommunications) , matrix (chemical analysis) , field (mathematics) , matrix method , computer science , materials science , telecommunications , mathematics , pure mathematics , chemistry , composite material , programming language
We investigate a class of stacked metasurfaces where the interaction between layers is dominated by their respective far-field response. Using a semi-analytic scattering matrix approach, we exploit the Fabry-Perot-type response for different layer distances to show the spectral tunability of the resonant effect. This method presents a faster and more intuitive route to modeling Fabry-Perot-type effects than rigorous numerical simulations. The results are illustrated for a chiral metasurface stack that exhibits asymmetric transmission. Here, the effect of asymmetric transmission is highly sensitive to the layer distance, which is used as a free parameter in our model. To prove our theoretical findings we fabricate two variants of the stack with different layer distances and show that far-field interaction between layers is sufficient to generate the effect while being accessible by semi-analytic modeling. The analyticity of the approach is promising for designing sophisticated layered media containing stacks of arbitrary metasurfaces.