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Fano-Induced Circular Dichroism in Three-Dimensional Plasmonic Chiral Metamolecules

Authors: 

KHAI Q. LE

Source title: 
Journal of Electronic Materials, 46(10): 5577-5581, 2017 (ISI)
Academic year of acceptance: 
2017-2018
Abstract: 

This paper introduces a three-dimensional (3-D) artificial chiral nanostructure, which has variant total optical loss spectroscopies under left- and right-handed circularly polarized (LCP and RCP) incident light. The resulting circular dichroism is induced by Fano resonance generated by the engineered chiral metamolecule, which consists of asymmetrically arranged gold (Au) nanoparticles in three dimensions. The Fano resonance generation is a consequence of modal interference between bright and dark plasmonic modes of asymmetric constituent dimers of the metamolecule.