When metallic nanoparticles are in close vicinity to a metallic film (typically separated by a dielectric material with a gap of a few nanometers or few tens of nanometers), plasmonic gap resonances can be generated with extremely strong field enhancement. Such nanostructures can provide a beautiful platform for generating many optical phenomena, including photothermal effects, nonlinear effects, fluorescence emission, etc. In this talk, we will review our recent work on these topics. We will show the strong coupling between plasmonic resonances and molecular excitons, nonlinear effects (second harmonic generation, third harmonic generation, and sum frequency generation) based on such plasmonic nanostructures, and many other interesting optical properties.


Seminar, July 29, 2016, 15:00. ICFO's Seminar Room

Hosted by Prof. Javier García de Abajo