239 citations · 551 across the 12 of their papers we have counts for
12 papers
Free-form inverse design of arbitrary dispersive materials in nanophotonics
Johannes Gedeon, Emadeldeen Hassan, Antonio Calà Lesina
In the last decades nanostructures have unlocked myriads of functionalities in nanophotonics by engineering light-matter interaction beyond what is possible with conventional bulk…
Dynamic dielectric metasurfaces via control of surface lattice resonances in non-homogeneous environment
Izzatjon Allayarov, Andrey B. Evlyukhin, Diane J. Roth +3
Dynamic control of metamaterials and metasurfaces is crucial for many photonic technologies, such as flat lenses, displays, augmented reality devices, and beam steering, to name a…
Anapole plasmonic meta-atom enabled by inverse design for metamaterials transparency
Emadeldeen Hassan, Andrey B. Evlyukhin, Antonio Calà Lesina
Anapole states are broadly investigated in nanophotonics for their ability to provide field enhancement and transparency. While low extinction has been achieved in dielectric nanop…
Topology optimization of dispersive plasmonic nanostructures in the time-domain
Emadeldeen Hassan, Antonio Calà Lesina
Topology optimization techniques have been applied in integrated optics and nanophotonics for the inverse design of devices with shapes that cannot be conceived by human intuition.…
Hyperpolarizability of plasmonic meta-atoms in metasurfaces
M. Saad Bin-Alam, Joshua Baxter, Kashif M. Awan +7
Plasmonic metasurfaces are promising as enablers of nanoscale nonlinear optics and flat nonlinear optical components. Nonlinear optical responses of such metasurfaces are determine…
Parallel FDTD modelling of nonlocality in plasmonics
Joshua Baxter, Antonino Calà Lesina, Lora Ramunno
As nanofabrication techniques become more precise, with ever smaller feature sizes, the ability to model nonlocal effects in plasmonics becomes increasingly important. While nonloc…
Optical phased arrays for LIDAR: beam steering via tunable plasmonic metasurfaces
Antonino Calà Lesina, Dominic Goodwill, Eric Bernier +2
Controlling the phase and amplitude of light emitted by the elements (i.e., pixels) of an optical phased array is of paramount importance to realizing dynamic beam steering for LID…
Plasmonic colours predicted by deep learning
Joshua Baxter, Antonino Calà Lesina, Jean-Michel Guay +3
Picosecond laser pulses have been used as a surface colouring technique for noble metals, where the colours result from plasmonic resonances in the metallic nanoparticles created a…
Origin of third harmonic generation in plasmonic nanoantennas
Antonino Calà Lesina, Pierre Berini, Lora Ramunno
Plasmonic nanoantennas have been recently proposed to boost nonlinear optical processes. In a metal dipole nanoantenna with a dielectric nanoparticle placed in the gap, the linear…
Chiral Huygens metasurfaces for nonlinear structuring of linearly polarized light
A. Calà Lesina, P. Berini, L. Ramunno
We report on a chiral nanostructure, which we term a "butterfly nanoantenna," that, when used in a metasurface, allows the direct conversion of a linearly polarized beam into a non…
Enhanced plasmonic coloring of silver and formation of large laser-induced periodic surface structures using multi-burst picosecond pulses
J. -M. Guay, A. Calà Lesina, J. Baxter +5
We report on the creation of angle-independent colors on silver using closely time-spaced laser bursts. The use of burst mode, compared to traditional non-burst is shown to increas…
Topographical coloured plasmonic coins
Jean-Michel Guay, Antonino Calà Lesina, Guillaume Côté +4
The use of metal nanostructures for colourization has attracted a great deal of interest with the recent developments in plasmonics. However, the current top-down colourization met…