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
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Please note that all times are shown in the time zone of the conference. The current conference time is: 29th June 2022, 08:28:35 CEST
In-situ microscale diagnostic of the melting pool in laser additive manufacturing using digital holography
Pascal Picart
Le Mans Université, France
Through the last decades Laser Beam Melting (LBM) emerged as the major metal additive manufacturing process to produce small to medium size structures. In this paper, we propose two-wavelength digital holography (TWDH) for in-situ investigation of the melt pool. TWDH has the advantage of being contact-less, non-intrusive, and yields full-field surface shape data without any requirement for scanning. This paper describes the optical set-up and its installation in a LBM system. We present first experimental results for in-situ diagnostic of the melt pool with several measurements.
Tuning photothermal effect of gold nanoprisms: mild hyperthermia for regenerative medicine
Maria Laura Amenta1, Giuseppina Tommasini1, Massimo Rippa1, Angela Tino1, Maria Moros2, Claudia Tortiglione1
1Istituto di scienze applicate e sistemi intelligenti, Consiglio Nazionale delle Ricerche, Pozzuoli, Italy; 2Instituto de Nanociencia y Materiales de Aragón , Zaragoza, Spain
Hyperthermia mediated by plasmonic materials is a non-invasive technique that allows the controlled increase of temperature into biological tissues. Localized hyperthermia can be achieved using gold nanoparticles as photothermal agents. In this work we describe the photothermal effect of gold nanoprisms on the morphology and molecular modifications of the model organism Hydra vulgaris, following irradiation with a NIR laser. The results reveal the action of heat on animal physiology and open new perspectives for the development of technologies based on hyperthermia for tissue regeneration.
Compact modules for off-axis holography in microfluidics: design solutions and applications
Teresa Cacace, Paturzo Melania, Vittorio Bianco, Vito Pagliarulo, Pietro Ferraro
CNR, Italy
We present a compact and cost-effective imaging module, implementing the interferometer architecture for off-axis digital holography on a commercial microfluidic chip, using a laser diode as light source. It is demonstrated that the characteristic features of Digital Holography, i.e. label-free imaging, quantitative phase mapping and flexible refocusing, are preserved, and differences and specific fields of applicability are highlighted.
Development and simulated environment testing of β-Ga2O3-based photodetectors for space-based observation of the Herzberg continuum
Xavier Arrateig1, Luc Damé1, Mustapha Meftah1, Halima Ghorbel1, Faustine Bouyssou1, Imene Sidi-Boumeddine1, Pierre Maso2, David Rogers3, Philippe Bove3, Vinod Sandana3, Ferechteh Teherani3
1Latmos-CNRS, France; 2PIT, France; 3Nanovation, France
This work presents the realization of β-Ga2O3-based photodetectors going from the wafer to the final packaged sensors including device architecture development, photolithography, contacting, probing, singulation, packaging, stringent robustness testing (in a simulated environment) and performance binning, so as to obtain final flight model photodetectors that will be integrated in the Inspire-Sat-7 Mission to monitor the Herzberg continuum from space
