Open AccessOptical rotation and electromagnetically induced transparency in a chiral metamaterial with C4 symmetry
Author(s) -
Wei Wu,
Wenbing Liu,
Zenghui Chun,
Yonghong Ling,
Jun Ding,
Xiaochuan Wang,
Lirong Huang,
Hanhui Li
Publication year - 2020
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.403421
Subject(s) - electromagnetically induced transparency , metamaterial , physics , optical rotation , rotation (mathematics) , symmetry (geometry) , quadrupole , optics , lorentz transformation , classical mechanics , quantum mechanics , geometry , mathematics
We design and fabricate a double-layered chiral metamaterial with 4-fold rotational symmetry, which simultaneously exhibits optical rotation and electromagnetically induced transparency (EIT) effects. Using analytical equivalent circuit model and Lorentz's coupled oscillator model, we interpret the physical mechanisms and derive material equations. Importantly, we find that magnetic dipole and electric quadrupole play important roles in optical rotation and keeping the symmetry of the material equations. Our work offers a better understanding of optical rotation in chiral metamaterials, and provides a new and simple approach to combine optical rotation and EIT effects into a single metamaterial.