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 & polymers, syntheses, characterization and applications
TOM 7 - Thermal radiation and energy management
TOM 8 - Non-linear and Quantum Optics
TOM 9 - Opto-electronic Nanotechnologies and Complex Systems
TOM 10 - Frontiers in Optical Metrology
TOM 11 - Tapered optical fibers, from fundamental to applications
TOM 12 - Optofluidics
TOM 13 - Advances and Applications of Optics and Photonics
EU Project Session
Early Stage Researcher 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 a detailed view (with abstracts and downloads when you are logged in as a registered attendee). The rest of the TOM sessions, EU project session, tutorials, and Early Stage Researcher session will be updated 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: 26th Nov 2022, 07:24:26pm WET

Session Overview
TOM6 S02: Optical Materials: crystals, thin films, organic molecules and polymers, syntheses, characterization and devices: Optical materials, understanding and applications
Wednesday, 14/Sept/2022:
4:30pm - 6:00pm

Session Chair: Sebastien Montant, CEA CESTA, France
Location: B324

3rd floor, 32 seats

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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.