Tiziana Cesca

TL;DR: In this paper, it was shown that graphene can be used to manipulate the optical emission and relaxation of erbium near-infrared emitters electrically, which can be applied to control the relaxation process of light-emitting excited ions.

TL;DR: A dramatic decrease of the intensity-dependent absorption coefficient is found in the Au-Ag nanoplanet configuration, which could be very promising for obtaining optical gain materials.

TL;DR: In this paper, the effects of oxidation on the SERS response of a peculiar kind of Ag nanostructured substrates, i.e., bi-dimensional ordered arrangements of Ag nanoprisms synthesized by nanosphere lithography, were investigated.

TL;DR: In this article, the mechanisms of photoluminescence enhancement induced by ultrasmall Au nanoclusters (made by less than 20 atoms) incorporated by low-fluence ion implantation into Er-doped silica are discussed.

TL;DR: In this article, the role of laser-composite interaction effects in the analyses is discriminated, and a phenomenological model is proposed that effectively reproduces the experimental findings, and spatially modulated reduction of both the linear refractive index and the absorbance are suggested as the mechanisms responsible for the observed transmittance Z-scan curves.