2 papers
physics.optics2024
Quantised helicity in optical media
Neel Mackinnon, Jörg B. Götte, Stephen M. Barnett +1
We present a new approach to the definition of optical helicity in a medium. Our approach resolves the problem that duality transformations which simultaneously combine $\mathbf{E}…
physics.optics2019
On the conservation of helicity in a chiral medium
Frances Crimin, Neel Mackinnon, Jörg B. Götte +1
We consider the energy and helicity densities of circularly polarised light within a lossless chiral medium, characterised by the chirality parameter . A form for the helicity d…