Toroidal optical activity
arXiv:1508.06192 · doi:10.1103/PhysRevB.94.035119
Abstract
Optical activity is ubiquitous across natural and artificial media and is conventionally understood in terms of scattering from electric and magnetic moments. Here we demonstrate experimentally and confirm numerically a type of optical activity that cannot be attributed to electric and magnetic multipoles. We show that our observations can only be accounted for by the inclusion of the toroidal dipole moment, the first term of the recently established peculiar family of toroidal multipoles.
5 pages, 4 figures
References in corpus (1)
Cited by in corpus (7)
- All-dielectric resonant metasurfaces with a strong toroidal response
- Origin of the anapole condition as revealed by a simple expansion beyond the toroidal multipole
- Flying doughnut terahertz pulses generated from semiconductor currents
- Giant and Flexible Toroidal Circular Dichroism from Planar Chiral Metasurface
- Toroidal optical transitions in hydrogen-like atoms
- Kirigami Metamaterials for Reconfigurable Toroidal Circular Dichroism
- Kirigami-based Flexible Metasurface with Reconfigurable Intrinsic Chirality from Zero to Near-unity