Journal
PHYSICAL REVIEW B
Volume 79, Issue 3, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.79.035321
Keywords
chirality; light polarisation; metamaterials; optical rotation; plasmons; polaritons
Funding
- German Federal Ministry of Education and Research (Metamat)
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We show that the chirality of artificial media, made of a planar periodic arrangement of three-dimensional metallic meta-atoms, can be tailored to cause a strong optical activity. The meta-atoms support localized plasmon polaritons and exhibit a chirality exceeding that of pseudoplanar chiral metamaterials by an order of magnitude. Two design approaches are investigated in detail. The first is the canonical example for a chiral structure, namely a Mobius strip. The second example is a cut wire-split-ring resonator geometry that can be manufactured with state-of-the-art nanofabrication technologies. Driven into resonance these meta-atoms give rise to a polarization rotation of 30 degrees per unit cell.
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