Computational Nanophotonics

On the convergence and accuracy of the FDTD method for nanoplasmonics

A. Calà Lesina, A. Vaccari, P. Berini, L. Ramunno

DOI: 10.1364/OE.23.010481

3D simulations of sphere, dipole, and bow-tie nanoantennas.

CHAPTER 6 - SIMULATIONS IN NANOPHOTONICS

A. Calà Lesina, J. Baxter, P. Berini, L. Ramunno

DOI: 10.1007/978-94-024-1544-5_6

ORIGIN OF THIRD HARMONIC GENERATION IN PLASMONIC NANOANTENNAS

A. Calà Lesina, P. Berini, L. Ramunno

https://doi.org/10.1364/OME.7.001575

Understanding third harmonic generation (THG) in hybrid nanoantennas

3D nanoantenna model

THG near-field (electric field magnitude). The THG is simulated directly in the code.

Parallel FDTD modelling of nonlocality in plasmonics

J. Baxter, A. Calà Lesina, L. Ramunno

DOI: 10.1109/TAP.2020.3044579

Parallelization strategy: 2-D representation of magnetic and electric field data transfers between adjacent subdomains.

Staircasing artifacts are much more prominent in (a) for LRA (local response approximation) FDTD than in (b) for nonlocal Drude FDTD

Modelling of nanophotonic non-linear metasurfaces, chapter 4

A. Calà Lesina, P. Berini, L. Ramunno

DOI: 10.1049/PBCS077F_ch4

Design of a metasurface for THG structured beam carrying OAM: (a) theoretical linear near field, (b) theoretical non-linear near field, (c) metasurface design for realizing the desired linear and non-linear near fields, (d) field distribution in the time domain (left) and frequency domain (right) obtained by FDTD simulation, and (e) computed non-linear far-field beam created by the metasurface