131 citations · 1.2k across the 59 of their papers we have counts for
4 papers · 1 filter
Classical antennae, quantum emitters, and densities of optical states
William L Barnes, Simon A R Horsley, Willem L Vos
We provide a pedagogical introduction to the concept of the local density of optical states (LDOS), illustrating its application to both the classical and quantum theory of radiati…
Zero index electromagnetic materials
S. A. R. Horsley, M. Woolley
Here we re-examine one of the most basic quantities in optics: the refractive index. Considering propagation in a plane, we first develop a general formalism for calculating the di…
Graded index lenses for spin wave steering
N. J. Whitehead, S. A. R. Horsley, T. G. Philbin +1
We use micromagnetic modelling to demonstrate the operation of graded index lenses designed to steer forward-volume magnetostatic spin waves by 90 and 180 degrees. The graded index…
Indifferent electromagnetic modes: bound states and topology
S. A. R. Horsley
At zero energy the Dirac equation has interesting behaviour. The asymmetry in the number of spin up and spin down modes is determined by the topology of both space and the gauge fi…