TOM 1 - Silicon Photonics and Guided-Wave Optics
TOM 2 - Computational, Adaptive and Freeform Optics
TOM 3 - Optical System Design, Tolerancing and Manufacturing
TOM 4 - Bio-Medical Optics
TOM 5 - Resonant Nanophotonics
TOM 6 - Optical Materials: crystals, thin films, organic molecules and polymers, syntheses, characterization and devices
TOM 7 - Thermal radiation and energy management
TOM 8 - Nonlinear and Quantum Optics
TOM 9 - Optics at Nanoscale (ONS)
TOM 10 - Optical Microsystems (OMS)
TOM 11 - Waves in Complex Photonic Media
TOM 12 - Optofluidics
TOM 13 - Ultrafast Optical Technologies and Applications
TOM 14 - Advances and Applications of Optics and Photonics
EU Project Session
Early Stage Researcher Session organised by SIOF
Grand Challenges of Photonics Session
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TOM11 S04: Waves in Complex Photonic Media: Complex Metaphotonics I
16:15 - 17:45
Session Chair: Silvia Romano, Italian National Research Council, Italy
Location:Aula 11 1,5 Floor
16:15 - 16:45 Invited ID: 253 / TOM11 S04: 1 TOM 11 Waves in Complex Photonic Media
Quo Vadis, metamaterials ?
Australian National University, Australia
Recently emerged field of Mie resonant metaphotonics provides practical alternatives
to classical metamaterials and allows creating subwavelength structures for advanced nanophotonics by employing electric and magnetic resonances in high-index dielectric nanoparticles and metasurfaces based on them. This talk aims to present some recent advances in the physics of resonant dielectric metastructures for efficient spatial and temporal control of light by employing multipolar Mie resonances and bound states in the continuum to achieve high values of the Q factor, with applications of these concepts to nanolasers, topological photonics, and sensing
16:45 - 17:15 Invited ID: 492 / TOM11 S04: 2 TOM 11 Waves in Complex Photonic Media
Nanostructured metasurfaces to control phase, polarization, and appearance
CNRS, IOGS-LP2N, France
Researches aiming at controlling optical diffraction by high-index nanostructured surfaces, also called optical metasurfaces nowadays, is 20-30 years old. In this talk, I will focus on optical metasurfaces composed of arrayed resonant meta-atoms and emphasize two aspects: fundamental limitations for beam shaping (see LPR 2021, 2000448) and appearance design with disordered metasurfaces.
17:15 - 17:30 ID: 529 / TOM11 S04: 3 TOM 11 Waves in Complex Photonic Media
Energy balance and the origin of the Bound states in continuum between lattice and single scattering resonance
Vito Mocella, Silvia Romano, Gianluigi Zito
It is well known that square lattice photonic slabs exhibit a symmetry protected Bound Sates in Continuum in Γ−point of the Brillouin zone, that can be related to topological protected states. Using Quasi-Normal-Mode expansion, we show that the resonances associated with the zero and the pole of transmission function exchange energy between electric and magnetic field. This further understanding of the mechanism in asymmetric slabs can open the way to engineering BIC with special features required in various studies and applications, for light manipulation at the nanoscale.
17:30 - 17:45 ID: 376 / TOM11 S04: 4 TOM 11 Waves in Complex Photonic Media
Electromagnetic scattering by networks of high-permittivity thin wires
Carlo Forestiere1, Giovanni Miano1, Bruno Miranda1,2
1Università degli Studi di Napoli Federico II, Department of Electrical Engineering and Information Technology, via Claudio 21,Napoli, 80125, Italy; 2Istituto di Scienze Applicate e Sistemi Intelligenti - Consiglio Nazionale delle Ricerche - via P. Castellino 111, Napoli, 80131, Italy
The electromagnetic scattering from interconnections of high-permittivity dielectric thin wires with sizes smaller than (or almost equal to) the operating wavelength is investigated. A simple lumped-element model for the polarization current intensities induced in the wires is proposed. The connection between the spectral properties of the loop inductance matrix and the network’s resonances is established. The number of allowed current modes and resonances is deduced from the topology of the circuit’s digraph. The coupling to radiation is also included, and the radiative frequency shifts and the quality factors are derived.