In plasmonics/planar: Multilayer Optics

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

A dipole is placed near a semi-infinite air/metal interface with orientation either parallel or perpendicular to the interface.

Setting up

Reproducing Fig. 6.1, p. 304 from Principles of Surface-Enhanced Raman Spectroscopy.

The total decay rates peak at the wavelength of excitation of planar SPPs ($\varepsilon=-1$) at the interface, they represent a non-radiative loss channel. The radiative decay rate in the upper medium has a trough at the wavelength where $\varepsilon=0$ ($D=0$ in the metal, by continuity $En=0$ above the interface), therefore by virtue of reciprocity the perpendicular dipole will not emit.

plasmonics/planar documentation built on Feb. 10, 2022, 5:55 a.m.