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: 16th Aug 2022, 02:45:19 CEST

 
 
Session Overview
Session
TOM9 S08: Optics at Nanoscale (ONS): Optical and NLproperties
Time:
Thursday, 16/Sept/2021:
8:15 - 9:45

Session Chair: Concita Sibilia, Università di Roma La Sapienza, Italy
Location: Aula 8

1st Floor

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Presentations
8:15 - 8:30
ID: 379 / TOM9 S08: 1
TOM 9 Optics at Nanoscale (ONS)

Doubly resonant photonic crystal cavities for efficient second-harmonic generation in III-V semiconductors

Simone Zanotti1, Momchil Minkov2, Shanhui Fan2, Lucio Andreani1,3, Dario Gerace1

1Università di Pavia, Italy; 2Stadnford University, Standford (USA); 3Institute for Photonics and Nanotechnologies IFN-CNR, Italy

Photonic crystals could offer a breakthrough to engineer highly efficient nonlinear processes in dielectric materials, due to their capability to confine light both in space and time. We designed a photonic crystal cavity in AlGaAs and GaN, aimed at enhanced second-harmonic (SH) generation, from a fundamental harmonic (FH) mode wavelength at 1550 nm matching a SH mode at 775 nm. Our results show that resonantly enhanced SHG can be achieved and properly optimized if the material structure and symmetry are considered.



8:30 - 8:45
ID: 120 / TOM9 S08: 2
TOM 9 Optics at Nanoscale (ONS)

Reconfigurable nonlinear emission in dielectric nanoantennas by light-induced thermo-optical effects

Michele Celebrano1, Davide Rocco2, Marco Gandolfi2,3, Attilio Zilli1, Francesco Rusconi1, Andrea Tognazzi2, Andrea Mazzanti1, Lavinia Ghirardini1, Eva.A.A. Pogna4, Luca Carletti2, Camilla Baratto3, Giuseppe Marino5, Carlo Gigli5, Paolo Biagioni1, Lamberto Duò1, Giulio Cerullo1,6, Giuseppe Leo5, Giuseppe Della Valle1, Marco Finazzi1, Costantino De Angelis2,3

1Politecnico di Milano, Italy; 2Università di Brescia, Italy; 3Istituto Nazionale di Ottica, Consiglio Nazionale delle Ricerche; 4Istituto di Nanoscienze, Consiglio Nazionale delle Ricerche; 5Laboratoire MPQ, CNRS, Universitè de Paris; 6Istituto di Fotonica e Nanotecnologie, Consiglio Nazionale delle Ricerche

We present the first realization and experimental demonstration of the optical modulation of the second harmonic generation (SHG) from a single all-dielectric nanoantenna, controlled by a continuous wave laser source. We prove that even with moderate temperature changes (few tens of degrees), the emitted SHG power by the nanoantenna can be significantly modulated (up to 60%).



8:45 - 9:00
ID: 150 / TOM9 S08: 3
TOM 9 Optics at Nanoscale (ONS)

Second and third harmonic generation from gold nanolayers: experiment versus theory

Laura Rodríguez1, Jose Trull1, Crina Cojocaru1, Neset Akozbek2, Domenico De Ceglia3, Maria Vincenti4, Michael Scalora5

1Department of Physics, Universitat Politècnica de Catalunya, Rambla Sant Nebridi 22, 08222 Terrassa, Spain; 2AEgis Technologies Inc., 401 Jan Davis Dr., Huntsville, Alabama 35806, USA; 3Department of Information Engineering – University of Padova, Via Gradenigo 6/a, 35131 Padova, Italy; 4Department of Information Engineering – University of Brescia, Via Branze 38, 25123 Brescia, Italy; 5Aviation and Missile Center, US Army CCDC, Redsone Arsenal, AL 35898-5000 USA

Understanding accurately how light interacts with semiconductors, metals and dielectrics at the nanoscale is crucial if one is to properly engineer nano-devices. When the nanoscale is reached, light-matter interactions display new phenomena where conventional approximations may not always be applicable. In this work, we measure the efficiency of second and third harmonic generation from gold nanolayers. The experimental results are compared with numerical simulations based on a detailed microscopic hydrodynamic model that considers different effects playing a role in the nonlinear response, not usually considered by more generic models.



9:00 - 9:15
ID: 539 / TOM9 S08: 4
TOM 9 Optics at Nanoscale (ONS)

Coupling of waveguide mode and graphene plasmons

Jiri Petracek1, Jiri Ctyroky2, Vladimir Kuzmiak2, Pavel Kwiecien3, Ivan Richter3

1Brno University of Technology, Faculty of Mechanical Engineering, Institute of Physical Engineering, Technicka 2896/2, 61669 Brno, Czech Republic; 2CAS Institute of Photonics and Electronics, Department of Fiber Lasers and Nonlinear Optics, Chaberska 57, 18251 Prague, Czech Republic; 3Czech Technical University in Prague, Faculty of Nuclear Sciences and Physical Engineering, Department of Physical Electronics, Břehova 7, 11519 Prague 1, Czech Republic

Photonic waveguides with graphene layers have been recently studied for their potential as fast and low-power electro-optic modulators with small footprints. We show that in the optical wavelength range of 1.55 µm, surface plasmons supported by the graphene layer with the chemical potential exceeding ~0.5 eV can couple with the waveguide mode and affect its propagation. This effect might be possibly utilized in technical applications as a very low-power amplitude modulation, temperature sensing, etc.



9:15 - 9:45
Invited
ID: 511 / TOM9 S08: 5
TOM 9 Optics at Nanoscale (ONS)

Ultrafast dynamics in quantum dots

Davide Boschetto1, Mateusz Weis1, Simon Mizrahi1, Emmanuel Péronne1, Junling Qu2, Erwan Bossavit2, Emmanuel Lhuillier2

1LOA, Laboratoire d’Optique Appliquée, ENSTA Paris/Ecole Polytechnique/CNRS, Chemin de la Hunière, 91761 Palaiseau cedex, France; 2Sorbonne Université, CNRS, Institut des NanoSciences de Paris, INSP, 75005 Paris, France

Quantum confinement allows ad-hoc material engineering for a large number of technological applications due to the sizeable energy gap linked directly to the crystal dimensions. In particular, it has been shown that colloidal quantum dots are very promising for new infrared-LED technologies.

We performed an extensive investigation of the ultrafast dynamics occurring in colloidal quantum dots, using a pump/probe configuration in the near infrared range. In particular, we show that a charge transfer dynamic can occurs between different types of quantum dots, allowing the enhancement of their infrared emitting properties.