239 citations · 669 across the 22 of their papers we have counts for
13 papers · 1 filter
Plasmonic Electro-Optic Modulators based on Epsilon-Near-Zero Materials: Comparing the Classical Drift-Diffusion and Schrödinger-Poisson Coupling Models
Masoud Shabaninezhad, Hamid Mehrvar, Eric Bernier +2
We present the design, modeling, and optimization of high-performance plasmonic electro-optic modulators leveraging voltage-gated carrier density in indium tin oxide (ITO) where th…
Electrically tunable plasmonic metasurface as a matrix of nanoantennas
Luis Angel Mayoral-Astorga, Masoud Shabaninezhad, Howard Northfield +5
We report the fabrication and characterization of a plasmonic metasurface comprising electrically contacted sub-wavelength gold dipole nanoantennas, conformally coated by a thin ha…
A Finite-Difference Time-Domain approach for dispersive magnetic media
Jasmin Graf, Joshua Baxter, Sanchar Sharma +2
We extend the Finite-Difference Time-Domain method to treat dispersive magnetic media by incorporating magneto-optical effects through a frequency-dependent permittivity tensor. Fo…
Inverse design of optical pulse shapes for time-varying photonics
Joshua Baxter, Lora Ramunno
There has been an explosion of interest in time-varying photonics due to the recent discovery and design of materials and metamaterials with strong, time-varying, nonlinear optical…
Understanding the nonlinear optical response of epsilon near zero materials in the time-domain
Joshua Baxter, Adriana Pérez-Casanova, Luis Cortes-Herrera +3
The promise of active nanophotonics technology relies on the confinement and control of light at the nanoscale. Confinement via plasmonics, dielectric resonators, and waveguides ca…
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…