1 research outputs found
Manifestation of Planar and Bulk Chirality Mixture in Plasmonic Λ‑Shaped Nanostructures Caused by Symmetry Breaking Defects
We
report on the coexistence of planar and bulk chiral effects
in plasmonic Λ-shaped nanostructure arrays arising from symmetry
breaking defects. The manifestation of bi- (2D) and three-dimensional
(3D) chiral effects are revealed by means of polarization tomography
and confirmed by symmetry considerations of the experimental Jones
matrix. Notably, investigating the antisymmetric and symmetric parts
of the Jones matrix points out the contribution of 2D and 3D chirality
in the polarization conversion induced by the system whose eigenpolarizations
attest to the coexistence of planar and bulk chirality. Furthermore,
we introduce a generalization of the microscopic model of Kuhn, yielding
to a physical picture of the origins of the observed planar chirality,
circular birefringence, and dichroism, theoretically prohibited in
symmetric Λ-shaped nanostructures