In nano-optics/planar: Multilayer Optics

knitr::read_demo("LFIEF_patterns", package="planar")

Applying optical reciprocity to the problem of dipolar emission near a planar interface, we can obtain the radiation pattern (intensity vs angle) by modelling the near-field at the dipole location for plane-wave illumination at a range of incident angles.

Dipole in a vacuum

We first confirm that the dipolar emission in a vacuum follows the expected sin^2 pattern. We define a dummy simulation (no actual interface),

Dipole near a thin gold film (Kretschmann configuration)

In the Kretschmann configuration, molecules situated on the air side will radiate predominantly in a narrow cone of angles, associated with the excitation of surface plasmon-polaritons (SPPs) radiating into the glass substrate. By reciprocity, the field enhancement experienced by a dipole near the metal layer is also obtained for a narrow range of angles where conservation of in-plane momentum between the incident light and the SPPs is satisfied.

nano-optics/planar documentation built on Feb. 9, 2022, 8:44 p.m.