Fig. 1
From: Increased rise time of electron temperature during adiabatic plasmon focusing
The plasmonic coupler–taper platform. a A pump pulse is focused from air onto a slit array, and launches SPPs at the dielectric/Au interface that propagate toward the tip apex. The SPP damping is probed by a delayed focused probe beam shown incident from the substrate. b Line shape of the sample. It shows how an SPP can be generated at the dielectric/Au interface and focused adiabatically toward the tip apex. c Scanning electron microscope top view of the device
