Abstract

The resonant interaction of light with nanostructures and metasurfaces enables the control of light properties beyond what is possible with bulk optical components. In this talk, I will discuss some results on random plasmonic metasurfaces for metal colouring [1], metasurfaces for nonlinear light structuring [2], and tunable hybrid nanostructures for optical phased arrays [3]. I will also highlight the focus of my team on the high-performance computing tools to accelerate the simulation and design of such systems [4].


[1] J.-M. Guay, A. Calà Lesina, et al., “Laser-written colours on silver: optical effect of alumina coating,” Nanophotonics 8(5), 2019.
[2] A. Calà Lesina, P. Berini, and L. Ramunno, “Vectorial control of nonlinear emission via chiral butterfly nanoantennas: generation of pure high order nonlinear vortex beams,” Optics Express 25(3), 2017.
[3] A. Calà Lesina, D. Goodwill, E. Bernier, L. Ramunno, and P. Berini, “Tunable plasmonic metasurfaces for optical phased arrays,” IEEE Journal of Selected Topics in Quantum Electronics 27(1), 2021.
[4] J. Baxter, A. Calà Lesina, and L. Ramunno, “Parallel FDTD modelling of nonlocality in plasmonics,” IEEE Transactions on Antennas and Propagation, 2020.