5 May 2015 Circular dichroism from Fano resonances in planar chiral oligomers
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Abstract
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.
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Ben Hopkins, Ben Hopkins, Alexander N. Poddubny, Alexander N. Poddubny, Andrey E. Miroshnichenko, Andrey E. Miroshnichenko, Yuri S. Kivshar, Yuri S. Kivshar, } "Circular dichroism from Fano resonances in planar chiral oligomers", Proc. SPIE 9502, Metamaterials X, 95020Q (5 May 2015); doi: 10.1117/12.2183280; https://doi.org/10.1117/12.2183280
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