Locally Enhanced and Tunable Optical Chirality in Helical Metamaterials
Philipp Gutsche, Raquel M\"ausle, Sven Burger
TL;DR
This paper presents a numerical study demonstrating how gold helix metamaterials can concentrate and tune optical chirality at sub-wavelength scales, enabling precise control of light-matter interactions.
Contribution
It introduces a method to enhance and dynamically tune optical chirality in helical metamaterials using numerical simulations.
Findings
Gold helices concentrate circularly polarized light energy at sub-wavelength regions.
Optical chirality can be smoothly shifted and tuned by changing illumination parameters.
Enhanced chirality spots enable precise control of light-matter interactions.
Abstract
We report on a numerical study of optical chirality. Intertwined gold helices illuminated with plane waves concentrate right and left circularly polarized electromagnetic field energy to sub-wavelength regions. These spots of enhanced chirality can be smoothly shifted in position and magnitude by varying illumination parameters, allowing for the control of light-matter interactions on a nanometer scale.
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