Seminar Announcement: Mariola Ramirez

Data pubblicazione: 5-dic-2018 8.23.01

Announcement

Wednesday, 5 December 2018, 15:00

Sala Grande Palazzina B via alla Cascata 56/C

"Interaction between localized surface plasmons and nonlinear solid state gain media"

Mariola Ramirez

Departamento Física de Materiales,

Universidad Autónoma de Madrid

Abstract

Noble metal nanostructures offers a promising perspective for the development of new photonic devices due to their ability to manipulate light in the nano-scale. Their extraordinary capability to couple light with collective oscillations of their conduction-band electrons results in a strong confinement of the electromagnetic energy in the surroundings of the metallic nanostructures. This feature can be used to enhance the interactions between the far-field light and optical emitters placed in close proximity to the metallic nanostructures.

In this context, different arrangements of silver nanoparticles formed on the surfaces of optically active ferroelectric crystals have shown their capability to obtain two types of optical radiation sources with improved performances at the nanoscale: i) Plasmon-assisted Nd³⁺-based solid state lasers and ii) Plasmon- enhanced Second Harmonic Generation. The mechanisms responsible for the intensification of the radiation–matter interaction processes by localized surface plasmon resonances are analyzed in each case.