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

Select a date or location to show only sessions at that day or location. Select a single session for detailed view (with abstracts and downloads when you are logged in as registered attendee). Plenary speeches, tutorials, and Early Researcher session will be updated very soon. Thank you for your patience!

Please note that all times are shown in the time zone of the conference. The current conference time is: 29th June 2022, 09:44:03 CEST

Session Overview
TOM9 S10: Optics at Nanoscale (ONS): Physical properties II
Thursday, 16/Sept/2021:
16:00 - 17:30

Session Chair: Vito Mocella, CNR, Italy
Location: Aula 8
1st Floor

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16:00 - 16:30
ID: 460 / TOM9 S10: 1
TOM 9 Optics at Nanoscale (ONS)

Experimenting with optical plasticity in photonic machine learning - towards all-optical Artificial Intelligence

Eugenio Fazio, Alessandro Bile, Hamed Tari

Sapienza Università di Roma, Italy

Soliton X-junctions are used as photonic neurons to perform both supervised and unsupervised learning. Networks of soliton interconnections connected together by simple X-junctions behave as AI self-organizing maps, learn complex information, store it and recognise unknown information by comparison. We will also show that solitonic interconnections can also replace the plastic element of reasoning and memory for extremely compact systems to process information transported, for example, in the form of SPP (surface-plasmon-polariton) signals. The advantage is the possibility of creating hybrid electronic-photonic circuits.

16:30 - 16:45
ID: 139 / TOM9 S10: 2
TOM 9 Optics at Nanoscale (ONS)

Directional scattering by dielectric core-semishell nanoparticles

T.P.S. Kotte, A.J.L. Adam, H.P. Urbach

Delft University of Technology, the Netherlands

Directional scattering by dielectric core-semishell nanoparticles is simulated using FEM software. The directionality of the scattering arises from the phase difference caused by the different materials which the nanoparticle is composed of. Conventionally, this phase difference is achieved by the use of metals. By choosing a medium with the refractive index between the core and semishell material, a pi phase difference is introduced causing directional scattering by the nanoparticle. This means that dielectric materials can be used, such that absorption by the nanoparticle is minimized.

16:45 - 17:00
ID: 340 / TOM9 S10: 3
TOM 9 Optics at Nanoscale (ONS)

Thermally reconfigurable dielectric metalens

Anna Archetti1,2, Ren-Jie Lin1, Ted V. Tsoulos1, Fatemeh Kiani1, Nathanael Restori1, Giulia Tagliabue1

1Laboratory of Nanoscience for Energy Technologies (LNET), STI, EPFL, Switzerland; 2Department of Biomedical Sciences, Neuroscience, UNIPD, Italy

In this work, we report the design of an ultrathin (300 nm thick) and thermo-optically reconfigurable silicon metalens operating in the visible regime (632 nm). Importantly, in our design, we rely on the thermo-optical effects to demonstrate that it is possible to achieve continuous variation of the focal-length at a fixed wavelength overcoming the need for a spatially-varying modulation input and potentially enabling an all-optical photo-thermal modulation. Our metalens exhibits a linear focal shift from 165 μm at 20°C to 135 μm at 260°C.

17:00 - 17:15
ID: 480 / TOM9 S10: 4
TOM 9 Optics at Nanoscale (ONS)

Photogating graphene/2D-semiconductors devices

Hongyu Tang, Tarique Anwar, Giulia Tagliabue

Laboratory of Nanoscience for Energy Technologies (LNET), STI, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland

In this work, we will compare the photogating performances of phototransistors based on pure graphene and graphene/2D-semiconductor. In particular, MoS2 and WSe2 will be used as n- and p- type semiconductors respectively. Our goal is to analyse the performance and mechanism of the photogating graphene-based devices, and explore nanophotonic engineering strategies to enhance their photoresponse.

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