title: Effects of surface plasmon polariton-mediated interactions on second harmonic generation from assemblies of pyramidal metallic nano-cavities.
abstract: We use polarization-resolved two-photon microscopy to investigate second harmonic generation (SHG) from individual assemblies of site-controlled nano-pyramidal recess templates covered with silver films. We demonstrate the effect of the surface plasmon polaritons (SPPs) at fundamental and second-harmonic frequencies on the effective second order susceptibility tensor as a function of pyramid arrangement and inter-pyramid distance. These results open new perspectives for the application of SHG microscopy as a sensitive probe of coherently excited SPPs, as well as for the design of new plasmonic nanostructure assemblies with tailored nonlinear optical properties.
authors.forename: Radoslaw
authors.initials: R
authors.lastname: Kolkowski
authors.forename: Justyna
authors.initials: J
authors.lastname: Szeszko
authors.forename: Benjamin
authors.initials: B
authors.lastname: Dwir
authors.forename: Eli
authors.initials: E
authors.lastname: Kapon
authors.forename: Joseph
authors.initials: J
authors.lastname: Zyss