Abstract
Vector vortex light of topological order m arises as a superposition of two twisted modes with phase functions e±imϕ (with ϕ the azimuthal variable) and circular polarizations (σ=∓1). We demonstrate that when m is sufficiently large these modes exhibit enhanced helicity densities when compared with the equivalent circularly-polarized Gaussian modes. The enhancement stems from the presence of longitudinal field components which become significant even for moderate beam widths. The super-chirality of light–matter interactions enabled by such modes suggests a high degree of enantioselectivity, surpassing conventional techniques for the chiral selection, so promising useful applications.
Original language | English |
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Article number | 130185 |
Number of pages | 5 |
Journal | Optics Communications |
Volume | 554 |
Early online date | 2 Dec 2023 |
DOIs | |
Publication status | Published - 1 Mar 2024 |
Bibliographical note
© 2023 The Authors. Published by Elsevier B.V.Keywords
- Chiral selection
- Enantioselectivity
- Light–matter interaction
- Longitudinal component
- Superchirality
- Vector vortex light