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Circular dichroism from Fano resonances in planar chiral oligomers

Hopkins, Ben; Poddubny, Alexander N; Miroshnichenko, Andrey; Kivshar, Yuri

Description

Here we present a general approach for describing the physics of Fano resonances in nanoparticle oligomers. It is shown that the interference of nonorthogonal collective eigenmodes is a sufficient condition to produce Fano resonances. We then show that such nonorthogonality between eigenmodes also permits the existence of a new form circular dichroism in the absorption and scattering cross-sections, even when circular dichroism is forbidden in the extinction cross-section.

CollectionsANU Research Publications
Date published: 2015
Type: Conference paper
URI: http://hdl.handle.net/1885/154212
Source: Proceedings of SPIE - The International Society for Optical Engineering
DOI: 10.1117/12.2183280
Access Rights: Open Access

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