226 citations · 743 across the 18 of their papers we have counts for
11 papers · 1 filter
Coexistence of local and nonlocal shock waves in nanomaterials
Ilaria Gianani, Silvia Gentilini, Iole Venditti +3
High-performing nanomaterials are paramount for advanced photonic technologies, like sensing, lasing, imaging, data storage, processing, and medical and biological applications. Me…
Biomimetic random lasers with tunable spatial and temporal coherence
Neda Ghofraniha, Luca La Volpe, Daniel Van Opdenbosch +2
Biologically inspired photonic structures are the key for technological advances and for miniaturized lasers. Here random lasers in dye-doped titania with the disordered structure…
Heterogeneous Random Laser with Switching Activity Visualized by Replica Symmetry Breaking Maps
Loredana M. Massaro, Silvia Gentilini, Alberto Portone +4
In the past decade, complex networks of light emitters are proposed as novel platforms for photonic circuits and lab-on-chip active devices. Lasing networks made by connected multi…
Optical Spatial Shock Waves in Nonlocal Nonlinear Media
Giulia Marcucci, Davide Pierangeli, Silvia Gentilini +3
Dispersive shock waves are fascinating phenomena occurring when nonlinearity overwhelms linear effects, such as dispersion and diffraction. Many features of shock waves are still u…
Transition from non-resonant to resonant random lasers by the geometrical confinement of disorder
N. Ghofraniha, I. Viola, A. Zacheo +3
We report on a novel kind of transition in random lasers induced by the geometrical confinement of the emitting material. Different dye doped paper devices with controlled geometry…
Time-resolved dynamics of granular matter by random laser emission
Viola Folli, Neda Ghofraniha, Andrea Puglisi +2
Because of the huge commercial importance of granular systems, the second-most used material in industry after water, intersecting the industry in multiple trades, like pharmacy an…
Random laser from engineered nanostructures obtained by surface tension driven lithography
N. Ghofraniha, I. Viola, F. Di Maria +3
The random laser emission from the functionalized thienyl-S,S-dioxide quinquethiophene (T5OCx) in confined patterns with different shapes is demonstrated. Functional patterning of…
Shock waves in disordered media
N. Ghofraniha, S. Gentilini, V. Folli +2
We experimentally investigate the interplay between spatial shock waves and the degree of disorder during nonlinear optical propagation in a thermal defocusing medium. We character…
Plasmonic enhanced lasers of nano-colloidal fluids
Neda Ghofraniha, Pascal Andrè, Andrea Di falco +1
Localized surface plasmon resonances have recently attracted considerable attention due to their ability to dramatically enhance near-field optical intensities and boost nanoscale…
Measurement of scaling laws for shock waves in thermal nonlocal media
N. Ghofraniha, L. Santamaria Amato, V. Folli +3
We are able to detect the details of spatial optical collisionless wave-breaking through the high aperture imaging of a beam suffering shock in a fluorescent nonlinear nonlocal the…
Shocks in nonlocal media
Neda Ghofraniha, Claudio Conti, Giancarlo Ruocco +1
We investigate the formation of collisionless shocks along the spatial profile of a gaussian laser beam propagating in nonlocal nonlinear media. For defocusing nonlinearity the sho…