Biomedical Engineering Reference
In-Depth Information
Figure 15.8
Aspectsoftheexciton-SPP-photoncouplingprocessexploited
via interaction of core-shell nanorods with a gold nanowire. Exciton
relaxation to SPP is ruled by near field interaction, while SPP decoupling at
thefarendofthewire,isdescribedviafarfieldemission.(a)FEMsimulation
of a
L
=
5
μ
m long
d
=
150 nm wide wire when excited by a Gaussian
beam at one end. (b) Directional emission pattern in respect to the axis
of the nanowire at the emitting end. (c) Scheme illustrating the directional
emissionofananorodfornearfield(NF)andfar-field(FF).(d)Electricfield
at the emitting far end as function of the polarization of the source respect
to the wire axis.
