The aim of our research is to explore new ways to control and enhance surface plasmon launching, propagation, and localization. We investigate novel hybrid plasmonic structures consisting of nanoantennas integrated in the center of ring diffraction gratings. The combination of the sub-wavelength confinement of localized surface plasmons (LSPs) and the high energy of propagating surface plasmon polaritons (SPPs) in our structures leads to precise nano-focusing at the nanoscale, which can be implemented to study the fluorescence enhancement and lifetime reduction of an ensemble of emitters as well as single emitters placed in their vicinity. To know more, go to our publication list.

Double plasmonic nancocavity made of gold with dye molecules at the center. Artist's view (left side) and electron microscope image (right side).