Optimally Chiral Electromagnetic Fields: Helicity Density and Interaction of Structured Light with Nanoscale Matter
arXiv:1809.04117 · doi:10.1021/acsphotonics.0c00304
Abstract
We propose the concept of helicity maximization applicable to structured light and obtain a universal rela-tion for the maximum of helicity density at a given field energy density. We further demonstrate that us-ing structured light with maximized helicity density eliminates the need of the specific knowledge of en-ergy and helicity densities in determining the chirality of a nanoparticle. The helicity maximization con-cept generalizes the use of the dissymmetry factor in chirality detection to any chiral structure light il-luminating nanoparticles.
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