Abstract
Numerical modeling of spectroscopic response, and near-field effects including local field enhancement and local optical chirality induced by metallic non-chiral nanostructures under continuous-wave laser excitations are presented in this paper. Particularly, excited-state dynamics including plasmon resonances and local optical activity is studied. The light-matter interaction problem is described through Maxwell's equations which are numerically solved by the boundary element method. The calculations are verified by the corresponding experiments. Knowledge of excited-state dynamics of metallic nanostructures provides valuable guidelines for designing alternative functional nanomaterials that is benefited from the enhanced light-matter interaction.
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