Conference Agenda

Session Overview
Location: B324
3rd floor, 32 seats
Date: Tuesday, 13/Sept/2022
2:30pm - 4:00pmEU S01: EU Project Session
Location: B324

Talks in this session:

  • Christophe Dujardin (Project: SPARTE), Scintillating porous architectures for radioactive gaz detection
  • Chiara Ceconello (Project: CRIMSON), Coherent Raman Imaging for the Molecular Study of the Origin of Diseases
  • David Hunger (Project: SQUARE), Scalable Rare Ion Quantum Computing Nodes 
  • Hugo Thienpont (Project: ACTPHAST4R), Open Access for European-based Researchers to Photonics High-Technology Platforms: the ACTPHAST4R initiative


Date: Wednesday, 14/Sept/2022
2:30pm - 4:00pmTOM6 S01: Optical Materials: crystals, thin films, organic molecules and polymers, syntheses, characterization and devices: Optical materials, structuring and applications
Location: B324
2:30pm - 3:00pm
ID: 268 / TOM6 S01: 1
TOM 6 Optical Materials: crystals, thin films, organic molecules & polymers, syntheses, characterization and devices

Laser micromachining of diamond: A viable photonic and optofluidic platform

Ottavia Jedrkiewicz1, Akhil Kuriakose1,2, Argyri N Giakoumaki3, Giulio Coccia3,4, Monica Bollani3, Roberta Ramponi3,4, Shane M Eaton3

1IFN-CNR, Como, Italy; 2University of Insubria, Como, Italy; 3IFN-CNR, Milano, Italy; 4Politecnico di Milano, Italy

We describe how the ultrafast laser micromachining technique applied with different writing methods can be used for the creation of various building blocks essential for the realization of a photonic and optofluidic diamond platform. Waveguides, NV centers, conductive wires, microchannels and microholes can be obtained thanks to laser microfabrication with suitable pulse parameters, making use not only of standard Gaussian laser beams but also of non-diffracting Bessel beams, the latter especially in all those cases where single pass high aspect-ratio microstructures or ablated areas are needed.

3:00pm - 3:15pm
ID: 248 / TOM6 S01: 2
TOM 6 Optical Materials: crystals, thin films, organic molecules & polymers, syntheses, characterization and devices

Flexible all-glass planar structured fabricated by RF-sputtering

Alice Carlotto1,2, Osman Sayginer3, Anna Szczurek1, Lam T. N. Tran1,4,5, Rossana Dell’Anna6, Stefano Varas1, Bartosz Babiarczuk7, Justyna Krzak7, Oreste S. Bursi8, Daniele Zonta8, Anna Lukowiak9, Giancarlo C. Righini10, Maurizio Ferrari1, Silvia Maria Pietralunga2, Alessandro Chiasera1

1IFN-CNR, CSMFO Lab. and FBK Photonics Unit, Via alla Cascata 56/C, Povo, 38123 Trento, Italy; 2IFN-CNR, P.zza Leonardo da Vinci 32, 20133 Milan, Italy; 3Chair of Biological Imaging and TranslaTUM, Technische Universität München, Ismaninger Str. 22, D-81675 Munich, Germany; 4Dept. of Physics, Politecnico di Milano, P.zza L. da Vinci 32, 20133 Milan, Italy; 5Dept. of Materials Technology, Faculty of Applied Sciences, Ho Chi Minh City University of Technology and Education, Vo Van Ngan Str. 1, Thu Duc District, 720214 Ho Chi Minh City, Vietnam; 6Center for Sensors and Devices, Micro Nano Facility, Fondazione Bruno Kessler, Via Sommarive 18, Povo, 38123, Trento, Italy; 7Dept. of Mechanics, Materials and Biomedical Engineering, Wroclaw University of Science and Technology, Smoluchowskiego 25, 50-370 Wroclaw, Poland; 8Dept. of Civil, Environmental and Mechanical Engineering, University of Trento, via Mesiano 77, 38123 Trento, Italy; 9Institute of Low Temperature and Structure Research, PAS, ul. Okólna 2, 50422, Wroclaw, Poland; 10IFAC-CNR, MiPLab, Via Madonna del Piano 10, 50019 Sesto Fiorentino, Italy, France

Flexible SiO2/HfO2 1D photonic crystals and active SiO2–HfO2:Er3+ all-glass flexible planar waveguides fabricated by radio frequency sputtering, are presented. The 1D photonic crystals show a strong dependence of the optical features on the light incident angle: i) blue-shift of the stopband and ii) narrowing of the reflectance window. Nevertheless, the most interesting result is the experimental evidence that, even after the 1D photonic crystals breakage, where the flexible glass shows naked-eye visible cracks, the multilayer structures generally maintain their integrity, resulting to be promising systems for flexible photonic applications thanks to their optical, thermal and mechanical stability. The flexible planar waveguides, fabricated on ultrathin flexible glass substrate, showed an attenuation coefficient lower than 0.2 dB/cm at 1.54 μm, and exibits emission in the NIR region, resulting particularly suitable as waveguide amplifier in the C band of telecommunications.

3:15pm - 3:30pm
ID: 170 / TOM6 S01: 3
TOM 6 Optical Materials: crystals, thin films, organic molecules & polymers, syntheses, characterization and devices

One-dimensional photonic crystal for polarization-sensitive surface-enhanced spectroscopy

Erika Mogni1, Giovanni Pellegrini2, Jorge Gil-Rostra3, Francisco Yubero3, Giuseppina Simone1,4, Stefan Fossati5, Jakub Dostalek5,6, Rebeca Martinez-Vazquez7, Roberto Osellame7, Michele Celebrano1, Marco Finazzi1, Paolo Biagioni1

1Politecnico di Milano, Dipartimento di Fisica, Milano, Italy; 2Università degli studi di Pavia, Dipartimento di Fisica, Pavia, Italy; 3CSIC-Universidad de Sevilla, Instituto de Ciencia de Materiales de Sevilla, Sevilla, Spain; 4Northwestern Polytechnical University, School of Mechanical Engineering, Xi'an Shaanxi, People's Republic of China; 5AIT Austrian Institute of Technology GmbH, Biosensor Technologies, Tulln an der Donau, Austria; 6Czech Academy of Sciences, FZU-Institute of Physics, Prague, Czech Republic; 7Istituto di Fotonica e Nanotecnologie (IFN)-CNR, Milano, Italy

We realize and experimentally characterize a novel platform for surface-enhanced sensing through Bloch Surface Waves (BSWs). We test a one-dimensional photonic crystal, with a high index inclusion in the top layer, that sustains surfaces modes with, in principle, arbitrary polarization. This is achieved through the coherent superposition of TE and TM dispersion relations of BSWs, which can also provide superchiral fields over a wide spectral range (down to the UV). The resulting platform paves the way to the implementation of polarization-resolved surface-enhanced techniques.

3:30pm - 3:45pm
ID: 222 / TOM6 S01: 4
TOM 6 Optical Materials: crystals, thin films, organic molecules & polymers, syntheses, characterization and devices

The role of heat treatment in improving photoluminescence and optically stimulated luminescence of HfO2

Alvaro de Farias Soares1,2, Sonia Hatsue Tatumi2,3, Clemens Woda1, Lilia Coronato Courrol4

1Helmholtz Zentrum München, Germany; 2Escola Politécnica, Universidade de São Paulo, Brasil; 3Instituto do Mar, Universidade Federal de São Paulo, Brasil; 4Instituto de Ciências Ambientais, Químicas e Farmacêuticas, Universidade Federal de São Paulo, Brasil

HfO2 is a metal oxide from the IV-B family whose properties have been widely applied in electronics and which displays an important blue emission. Despite this fact, few studies have been dedicated to understanding the role of heat treatment on its luminescence properties. Therefore, this study aimed to investigate the Photoluminescence (PL) and Optically Stimulated Luminescence (OSL) of HfO2 powder synthesized by the precipitation method and the influence of calcination on its luminescence. PL spectra results showed a broad emission band at about 2.6 eV, which was related to absorption at 4.1 eV. Green and blue stimulated luminescence spectra depicted emission bands in a similar region, varying between 2.44 up to 2.71 eV. The increase in the heat treatment temperature promoted signal enhancement, which could be associated with higher oxygen vacancy concentrations. OSL dose-response curves for the sample calcined at 1600 °C are linear up to 0.6 Gy and a good signal reproducibility is observed, which makes the material suitable for OSL dosimetry.

4:30pm - 6:00pmTOM6 S02: Optical Materials: crystals, thin films, organic molecules and polymers, syntheses, characterization and devices: Optical materials, understanding and applications
Location: B324
Session Chair: Sebastien Montant, CEA CESTA, France
4:30pm - 5:00pm
ID: 340 / TOM6 S02: 1
TOM 6 Optical Materials: crystals, thin films, organic molecules & polymers, syntheses, characterization and devices

Transparent wood – optical property understanding and tailoring

Yuanyuan LI

KTH Royal Institute of Technology, Sweden

Transparent wood (TW) is an emerging structural optical material with great potential in energy efficient buildings, opto-electronic devices, photonics, etc. It combines high optical transmittance with high haze. Due to the intrinsic anisotropic wood structure, the optical properties are anisotropic. Understanding the light interaction with TW is vital to tailor the optical properties for suitable applications. Therefore, in this work, light interaction with TW was studied. Based on the understanding, the optical properties could be manipulated.

5:00pm - 5:15pm
ID: 344 / TOM6 S02: 2
TOM 6 Optical Materials: crystals, thin films, organic molecules & polymers, syntheses, characterization and devices

Terahertz helical antenna from vegetable celery

Carlito Jr Salonga Ponseca

Gulf University for Science and Technology, Kuwait

Next generation communication systems will almost certainly rely on higher frequency region of the electromagnetic waves, i.e., the terahertz (THz, 1012 Hz) regime. This is to accommodate the gargantuan data rates due to the ever-increasing appetite for text, voice, and video information. In this work, we present a potential THz antenna that can be produced with low cost and high production yield. By coating the helical structure of vegetable celery with organo-metallic poly(4-(2,3-dihydrothieno [3,4-b]-[1,4]dioxin-2-yl- methoxy)-1-butanesulfonate (PEDOT-S), an absorption band centered at 1.1 THz was observed. Several batches of celery antenna were prepared using different experimental conditions wherein shift in the THz absorption peak clearly manifested. Using ComsolTM Multiphysics simulation package, we attempted to understand these results.

5:15pm - 5:30pm
ID: 294 / TOM6 S02: 3
TOM 6 Optical Materials: crystals, thin films, organic molecules & polymers, syntheses, characterization and devices

Janus cellulose switchable optics for solar-induced self-adaptive heating and evaporative drying

Subham Dastidar1,2, Md Mehebub Alam1,2, Xavier Crispin1,2, Dan Zhao1,2, Magnus P Jonsson1,2

1Laboratory of Organic Electronics, Department of Science and Technology (ITN), Linköping University, Norrköping, Östergötland, Sweden; 2Wallenberg Wood Science Center, Linköping University, Norrköping, Sweden

Note: Submission will be presented by Dr. Debashree Banerjee in place of Subham Dastidar.

Cellulose with its sustainable availability and ability to manage light interactions possesses immense potential for diverse applications in optics. While cellulose is inherently low-absorbing and its transparency can be tuned by microstructure, invoking optical dynamicity by reversible wetting with liquids, such as water, opens opportunities for wider range of applications. Here, we present a novel cellulose-based Janus structure that demonstrates solar-induced self-adaptive heating, and evaporative drying. The Janus structure is designed by overlaying a highly reflective (~90%) porous cellulose layer atop a strongly absorbing (>95%) cellulose-CNT layer. This ensures the Janus structure to remain highly reflective and non-absorptive at dry conditions. However, on wetting, the optical transparency of the porous layer increases and permits the absorptive bottom layer to access direct solar radiation. This enables the bottom layer to absorb solar light and generate heat, which is offset by endothermic water evaporation from the structure and eventually recovering to its dry reflective state. In-situ measurements of light scattering, temperature, and evaporative loss reveal an intriguing dynamic relationship between the optical properties of Janus structure and mechanism involved in the drying process.

5:30pm - 5:45pm
ID: 249 / TOM6 S02: 4
TOM 6 Optical Materials: crystals, thin films, organic molecules & polymers, syntheses, characterization and devices

Polarized light guiding anisotropic deformation and relaxation in photosensitive polymeric substrates

David Urban1, Dag Roar Hjelme1, Emiliano Descrovi2

1Norges Teknisk-Naturvitenskapelige Universitet (NTNU), Norway; 2Politecnico di Torino (Polito), Italy

Light-responsive polymers offer unique possibilities for anisotropic manipulation of objects on the micron scale. Here we demonstrate the reversible anisotropic stretching of a polymeric surface made out of an azopolymer-elastomer blend, in response to green laser irradiation with varying polarization. We quantify the stretching parameters and the residual strain after relaxation by means of a Fourier-based analysis, which exploits a periodic 2D pattern imprinted onto the surface.

5:45pm - 6:00pm
ID: 280 / TOM6 S02: 5
TOM 6 Optical Materials: crystals, thin films, organic molecules & polymers, syntheses, characterization and devices

Growth and mid-infrared emission properties of "mixed" fluorite-type Er:(Ca,Sr)F2 and Er:(Ba,Sr)F2 crystals

Liza Basyrova1, Pavel Loiko1, Abdelmjid Benayad1, Gurvan Brasse1, Jean-Louis Doualan1, Alain Braud1, Ammar Hideur2, Patrice Camy1

1Centre de Recherche sur les Ions, les Matériaux et la Photonique (CIMAP), UMR 6252 CEA-CNRS-ENSICAEN, Université de Caen Normandie, France; 2UMR 6614, CNRS-INSA-Université de Rouen, Normandie Université, France

Fluorite-type 5 at.% Er3+:(M1,M2)F2 (M1 = Ca, Ba; M2 = Sr) crystals were grown by the conventional Bridgman technique and a comparative study of their spectroscopic properties was performed. The vibronic properties of the fluorite-type crystals were studied by Raman spectroscopy. The Er:(M1,M2)F2 crystals exhibited a slightly inhomogeneous broadening of mid-infrared luminescence spectra as compared to the ‘parent’ compound, Er:SrF2. The luminescence lifetimes of the 4I11/2 and 4I13/2 manifolds were measured, e.g., for the Er:(Ca,Sr)F2 crystal, the luminescence lifetimes were estimated to be 8.64 ms and 5.64 ms, respectively, representing a favorable ratio for mid-IR laser operation.


Date: Thursday, 15/Sept/2022
4:00pm - 5:30pmEU S02: EU Project Session
Location: B324

Talks in this session:

  • Valdas Pasiskevicius (Project: LEMON), Lidar Emitter and Multispecies greenhouse gases Observation iNstrument
  • Marta Zanoletti (Project: VASCOVID), Portable platform for the assessment of microvascular health in COVID-19 patients at the intensive care
  • Anurag Behera (Project: TinyBrains), Bio-photonic imaging of the infant brain, the missing link between the cellular brain damage and the neurovascular unit during acute illness
  • Alessandro Trenti (Project: UNIQORN), Affordable Quantum Communication for Everyone: Revolutionizing the Quantum Ecosystem from Fabrication to Application
  • Monica Bollani (Project: NARCISO), NAtuRal instability of semiConductors thIn SOlid films for sensing and photonic applications