Conference Agenda

Topical Meetings and Sessions:

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

More information on the Topical Meetings

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Session Overview
TOM9 S09: Optics at Nanoscale (ONS): Physical properties I
Thursday, 16/Sept/2021:
11:15 - 12:45

Session Chair: Emilija Petronijevic, Sapienza University of Rome, Italy
Location: Aula 8

1st Floor

11:15 - 11:45
ID: 354 / TOM9 S09: 1
TOM 9 Optics at Nanoscale (ONS)

Expansion(s) of electromagnetic fields on dispersive quasi normal modes

Guillaume Demesy

Institut Fresnel, France

In this presentation, an open source Quasi Normal Mode (QNM) solver based on Finite Elements will be presented. In typical cases encountered in photonics with dispersive materials and open geometries, computing the QNMs reduces to solving a Non Linear Eigenvalue Problem (NEP). Various linearization schemes will be detailed, as well as several intrinsic pitfalls of the method. Then, a QNM expansion onto the QNMs set will be introduced based on the Keldysh theorem. Finally, the resulting open source template model packaging all the features introduced will be presented.

11:45 - 12:00
ID: 540 / TOM9 S09: 2
TOM 9 Optics at Nanoscale (ONS)

BIC in waveguide arrays

Vladimir Kuzmiak1, Jiří Petráček2

1CAS Institute of Photonics and Electronics, Czech Republic; 2Institute of Physical Engineering, Brno University of Technology, Czech Republic

We propose a simple theoretical model based on the coupled-mode theory which allows to calculate the spectral properties and transmittance of the one-dimensional waveguide structures. The model was verified on the common coupled-waveguide array in which the existence of the symmetry-protected bound state in the continuum (BIC) was confirmed experimentally by Plotnik et al.[Phys.Rev.Letters 107, 28-31(2011)]. The method can be extended to topologically nontrivial lattices to explore the properties of the BICs protected by time-reversal symmetry (TRS).

12:00 - 12:15
ID: 271 / TOM9 S09: 3
TOM 9 Optics at Nanoscale (ONS)

Bound states in the continuum platform for enhanced refractive index imaging

Silvia Romano1, Maria Mangini2, Stefano Cabrini3, Erika Penzo3, Anna Chiara De Luca2, Ivo Rendina1, Vito Mocella1, Gianluigi Zito1

1National Research Council ISASI, Via Pietro Castellino, Naples, 80131, Italy; 2National Research Council IBBC, Via Pietro Castellino, Naples, 80131, Italy; 3Molecular Foundry, Lawrence National Laboratory of Berkeley, Berkeley, CA 94720, USA

An advanced hyperspectral sensing imaging taking advantage of engineered all-dielectric platforms supporting bound states in the continuum (BIC) here is discussed. This approach combines surface-enhanced fluorescence and refractometric sensing both based on high-Q resonances in proximity of BICs.To demonstrate the real implementation of the proposed BIC-enhanced imaging as a platform for biosensing, hyperspectral maps of prostate cancer cells are experimentally reconstructed.

12:15 - 12:45
ID: 128 / TOM9 S09: 4
TOM 9 Optics at Nanoscale (ONS)

Plasmonic modes in cylindrical nanoparticles

Guillaume Weick

Université de Strasbourg, CNRS, Institut de Physique et Chimie des Matériaux de Strasbourg, France

An intensively studied quasiparticle in plasmonics is the localized surface plasmon, a collective oscillation of conduction electrons in metallic nanoparticles. Exploring how its resonance frequency changes depending on the nanoparticle geometry is a fundamental task of the field. Inspired by recent groundbreaking experiments, we derive, using a continuum mechanics model borrowed from nuclear physics, analytical expressions for the dipolar plasmon resonances in cylindrical nanoparticles. Importantly, our analytic theory is valid for any aspect ratio of the cylinder, and as such is of relevance for a wide range of experiments.