2nd COLLOQUIUM ON THE PHYSICS AND APPLICATIONS OF METASURFACES
Fortezza da Basso, Florence, Italie, July 18-22 2022
This 2nd COLLOQUIUM was a great success with 97 attendees, the double of Cargese.
Announcement of the awards made by Prof. Zentgraf.
From left to right: 1st prize (G. Crotti), 2nd prize (M. Weissflog), 3rd prize (S. Sideris)
- Prof. Giuseppe Leo, Chair, Université Paris Cité, France
- Prof. Costantino De Angelis, Co-Chair, Università di Brescia, Istituto Nazionale di Ottica - Consiglio Nazionale delle Ricerche, Italy
- Dr. Patrice Genevet, Program Chair, CNRS-CHREA & Université Côte d’Azur, France
- Prof. Rita Asquini, Università La Sapienza, Italy
- Dr. Sébastien Cueff, CNRS, INL-ECL, France
- Dr. Stéphane Lanteri, INRIA, France
Confirmed invited speakers
Karim Achouri, EPFL
Mario Agio, University of Siegen
Antonio Ambrosio, IIT Genova
Rita Asquini, Università La Sapienza Roma
Alexanrde Baron, Université de Bordeaux
Nicolas Bonod, Institut Fresnel Marseille
Adrien Borne, Université Paris Cité
Patrick Bouchon, ONERA
Antonio Calà-Lesina, Leibniz University Hannover
Luca Carletti, Università di Brescia
Michele Celebrano, Politecnico di Milano
Rémi Colom, CRHEA Sophia Antipolis
Sébastien Cueff, INL-ECL Lyon
Alfredo De Rossi, Thales R&T
Aloyse Degiron, Université Paris Cité
Giuseppe Della Valle, Politecnico di Milano
Tal Ellenbogen, Tel Aviv University
Mahmoud Elsawy, INRIA Sophia Antipolis
Ivan Favero, Université Paris Cité
Marco Finazzi, Politecnico di Milano
Andrea Fratalocchi, KAUST
Jean-Michel Gérard, CEA Grenoble
Carlo Gigli, EPFL
Christina Kyrou, CRHEA Sophia Antipolis
Stefano Maci, Università di Siena
Olivier Martin, EPFL
Dragomir Neshev, ANU Canberra
Hai Son Nguyen, INL-ECL Lyon
Thomas Pertsch, F. Schiller University Jena
Mihail Petrov, ITMO University
Junsuk Rho, POSTECH
Christian Seassal, INL-ECL Lyon
Michele Tamagnone, IIT Genova
Jelena Vukovic, Stanford University
Thomas Zentgraf, University of Paderborn
Conventional optical components control light using gradual phase accumulation through propagation in refractive materials. Recently, ultrathin optical interfaces capable of controlling the light properties, including amplitude - phase - polarization and the dispersion of light, have been proposed for mid-infrared and optical wavelengths. These devices, called metasurfaces, rely on the scattering properties of ultrathin subwavelength scale optical resonators patterned at interfaces. The design was influenced by the ability to control scattering of light from wavelength-scale dielectric or metallic nanoparticles in the resonant scattering regime or in the non-resonant one using the geometric phase. Since about ten years, the concept of metasurfaces has gained considerable attention in the optics community, offering new perspectives for the realization of optical components with unexpected optical functionalities. Devices such as holograms, polarimeters, cameras, lasers with arbitrary wavefronts, polarization sensitive imaging, nonlinear and quantum optical components with extended functionalities have been proposed.
The purpose of this workshop is to gather the academic community working on metasurfaces, after the first successful edition. The topics of interests are fundamental principles and technological applications of metasurfaces, targeting new phenomena and advanced optical functionality of metasurfaces, with a careful attention on their applications in realistic optical systems.
The workshop contains special sessions addressing both scientific and industrial purpose and an educational afternoon session with a young research forum. The workshop consists of conventional presentations, including 5 special sessions involving academics and industrials (Monday, Tuesday, Wednesday, Thursday morning and Friday morning), and one afternoon (Thursday) devoted for graduate students and postdocs to present their own work in a non-intimidating environment, to build collaborative networks with their peers, and prepare them for active participation to the scientific community. Every day, two main research topics will be considered with a morning and an afternoon dedicated session. A tutorial/keynote presentation has been selected to present and introduce the subject.
08:00-08:30 Welcome and workshop introduction
08:30-09:30 A. Alù Engineered nonlocalities in optical metasurfaces: fundamentals and applications
09:30-10:00 N. Bonod Analysis of the optical response of Mie-resonant scatterers and metasurfaces via the singularities of the S-Matrix
10:00-10:30 K. Achouri Spatial Symmetries in Multipolar Metasurfaces
11:00-11:30 R. Colom The topological origin of a universal 2π-phase retardation in non-Hermitian metasurfaces
11:30-12:00 M. Elsawy Universal active metasurface control with ultimate performance in reflection
14:00-14:30 A. Baron Self-assembled meta-atoms and metasurfaces : Huygens multipoles and homogenization problems
14:30-15:00 C. Gigli Fundamental limitations of Huygens’ metasurfaces
15:30-16:00 J. Rho Breaking the capacity limit of metasurfaces using inverse design
16:00-16:30 A. Calà Lesina Large-scale inverse design of dispersive nanophotonic structures
16:30-17:00 A. Borne Modeling spontaneous photon-pair generation at the nanoscale
08-30-09:00 P. Bouchon Thermal emission of light by nanoantennas
09:00-09:30 R. Asquini Plasmonic metasurfaces and periodic nanostructures for nanophotonic biosensors
09:30-10:00 A. De Rossi Nanoscale Optical Parametric Sources
10:00-10:30 A. Degiron Optoelectronic metasurfaces for the spontaneous emission of structured light
11:00-11:30 J. Vukovic Inverse design of large area integrated photonics and metasurfaces
11:30-12:00 I. Favero Chains and arrays of resonators in optomechanics
14:00-15:00 F. Capasso Recent advances in flat optics : from structured light and dark to metasurfaces for communications and high-volume applications
15:30-16:00 C. Seassal Metasurfaces and photonic mode engineering for photocatalysis
16:00-16:30 M. Petrov Thermooptical bistability enabled with high-Q states in all-dielectric nanostructures
16:30-17:00 T. Zentgraf Cascaded metasurface holography for optical secret sharing
08:30-09:30 S. Fan Nonlocal metasurface: topological physics and image processing applications
09:30-10:00 G. Della Valle Ultrafast all-optical control of light with plasmonic metasurfaces
10:00-10:30 J.-M.Gérard Ultrafast all-optical tuning of semiconductor microcavities and metasurfaces
11:00-11:30 S. Cueff Multilevel non-volatile tuning of metasurfaces with Phase-Change Materials
11:30-12:00 D. Neshev Tunable metasurfaces for amplitude and phase modulation
14:00-14:30 M. Celebrano Controlling the Second Harmonic Generation from nanoantennas and metasurfaces
14:30-15:00 L. Carletti Nonlinear frequency generation and reconfigurability in dielectric Mie-resonant nanostructures
15:30-16:00 H. S. Nguyen Quasi-BIC microlaser: beaming with style in active resonant metasurface
16:00-16:30 C. Kyrou Liquid-crystal active metasurfaces
16:30-17:00 S. Maci Self complementary metasurfaces
09:30-10:00 T.Ellenbogen Tailored THz generation by nonlinear metasurfaces
10:00-10:30 O. Martin Nonlinear metasurfaces
11:00-11:30 M. Finazzi Nonlinear emission from plasmonic and dielectric nanoantennas by dual-beam pumping
11:30-12:00 T. Pertsch LNOI quantum metasurfaces
08:30-09:00 M. Tamagnone Supercell metasurfaces for optoelectronic applications
09:00-10:00 P. Lalanne Visual appearance of metasurfaces composed of Mie or plasmonic nanoresonators
10:00-10:30 A. Fratalocchi Universal light encoders for next generation artificial intelligent hardware in optical systems and hyperspectral imaging
11:00-11:30 A. Ambrosio Optical vortex crystals with dynamic topologies
11:30-12:00 M. Agio Optical properties of thin diamond membranes: opportunities for metasurfaces
12:00-12:30 Workshop conclusion
Monday 18 July: the first session is entitled “Fundamentals of metasurfaces”. The development of metasurfaces and their current deployment in real world applications require proper understanding of the underlying physical mechanisms, new design method leading to high efficient and reliable devices and proper simulation methods. Monday session will be devoted to the introduction of those basic concepts and the theoretical development in the field. Recent advances on theoretical modelling (FDTD/FEM methods, optimization and inverse design methodologies, e.g., with gradient-based, evolutionary and machine learning algorithms), and their impact on experimental design will be presented.
Tuesday 19 July: the second session is entitled “New functionalities of metasurfaces 1”. In this session, we will discuss new principles, technological and emerging applications, trying to emphasize practical developments of metasurface prototypes in imaging systems, sensing, communication system, quantum optics, optomechanics, polarimetry and data storage. We consider as well new materials, structures, and advanced optical functionalities of metasurfaces.
Wednesday 20 July: the third session is entitled “New functionalities of metasurfaces 2”. In this session we discuss passive and active nanophotonics. We will present new developments of metasurfaces and their deployment in real world applications, which require scalable nanofabrication methods able to reproduce a large number of devices. Materials for metasurfaces (e.g., 2D materials, oxides/nitrides, phase-change materials, high-index dielectrics) will be discussed.
Thursday 21 July: the fourth session is entitled “Nonlinear metasurfaces”. We will discuss innovative nonlinear light manipulation with nanostructures and nonlinear metasurfaces. In the afternoon, the students will organize the “Young research forum”. The afternoon will include the poster session, with prestigious prizes provided by NATO and the Nanophotonics journal. The day will end with the Conference Dinner.
Friday 22 July: the fifth and last session is entitled “Perspectives, devices and applications”. This last morning will be devoted to emerging applications. It is a more transversal session, opened to topics susceptible of further widening the research directions and exploring the potential impact of metasurfaces and metamaterials in other fields of research.
Exhibition & Sponsorship:
Registration is closed.
Registration: April 15 - June 15, 2022
Registration fee : 350€
Registration is closed.
This colloquium is organized by the Nanophotonics club of the Société Française d’Optique
The Nanophotonics Club is focused on the interactions of light with structured matter at a sub-wavelength scale. This structuring, made possible by advances in modeling and nanofabrication, can thus give rise to plasmonic effects as well as metamaterial/metasurface behaviors. These objects enhance physical phenomena including e.g. nonlinear, quantum and thermal effects. Their study is thus inherently interdisciplinary.