Conference Agenda
Please note small changes to the agenda are still possible.
Read about the Topical Meetings and sessions of the conference
Select a date or location to show sessions only on 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).
|
Session Overview |
Date: Friday, 15/Sept/2023 | |
8:30am - 10:00am | TOM9 S07: Applications of Optics and Photonics Location: Morey St Denis Session Chair: Susana Novais, INESCTEC, Portugal |
|
8:30am - 8:45am
ID: 457 / TOM9 S07: 1 TOM 9 Applications of Optics and Photonics Toward photothermal damage detection during laser osteotomy using optical coherence tomography 1University of Basel, Department of Biomedical Engineering, Biomedical Laser and Optics Group (BLOG), Allschwil, Switzerland; 2University of Basel, Department of Biomedical Engineering, Digital Dermatology, Allschwil, Switzerland; 3University Hospital of Basel, Department of Dermatology, Basel, Switzerland; 4University of Basel, Department of Biomedical Engineering, Center of medical Imaging Analysis \& Navigation (CIAN) Feedback systems have been utilized to reduce the possible thermal side effects of lasers for surgery by means of temperature monitoring to control irrigation systems. In this study, we investigated the potential application of optical coherence tomography as a means of detecting bone dehydration status. We investigated the penetration depth of the OCT laser and its respective relation to the hydration status of bone. A deep-learning method was utilized to differentiate between different levels of water content in bone tissue (fresh/hydrated, dehydrated, and carbonized) based on the OCT images. The proposed model achieved an accuracy of 0.912 on an independent test set, demonstrating its ability to accurately predict the state of the bone considering these three conditions. We believe this method can potentially accelerate the detection of dehydration during laser surgery, improving the safety of using lasers with real-time feedback. 8:45am - 9:00am
ID: 122 / TOM9 S07: 2 TOM 9 Applications of Optics and Photonics Conceptualization of multidimensional finite impulse response filter for projected emittance images-sets 1South East Technological University, Carlow, Ireland; 2Deutsches Elektronen Synchrotron – DESY, Zeuthen, Germany Photoemission in modern high-brightness electron sources is under study at the DESY-PITZ photo injector. The electron source optimization process is under continuous upgrading. The developments in modern digital signal processing provide an opportunity for building intelligent algorithms that implement mathematical methods unattainable by analogue technology which can support the related image of emittance measurements from PITZ system. In this work, we provide an intriguing technique for designing multilayer FIR filters with minimal computing effort. As a result, the filter design is particularly effective at reducing complicated noise and performs quickly and efficiently. 9:00am - 9:15am
ID: 285 / TOM9 S07: 3 TOM 9 Applications of Optics and Photonics Selective emitter for solar thermophotovoltaic applications 1Industrial Engineering Department, University of Napoli “Federico II”, 80126 Napoli, Italy; 2National Research Council of Italy, Napoli Unit, Institute of Applied Sciences and Intelligent Systems, 80131 Napoli, Italy; 3Electrical & Computer Engineering Department, Purdue University, 47907 West Lafayette (IN), USA; 4Physics Department, University of Napoli “Federico II”, 80126 Napoli, Italy Selective Emitters (SEs) are the main components of solar thermophotovoltaic (STPV) systems; they act as intermediate thermal radiation emitters to shape the incident solar spectrum to match the wavelengths useful for the PV cell. In this work, we present the design, optimisation, fabrication, and characterisation of an SE based on a multilayer design made of SiNx, SiO2, and TiO2 layers. The SE is optimised to work with PV cells based on III-V semiconductors, such as GaSb, InGaAs, and InGaAsS, the bests suitable for SPTV applications. The fabricated SE shows an emitter efficiency (ηSE) of 50% if matched with a PV cell with an energy bandgap of 0.63 eV. 9:15am - 9:30am
ID: 436 / TOM9 S07: 4 TOM 9 Applications of Optics and Photonics Experimental characterization of a Raman based distributed temperature sensor using a 1064 nm pump 1Instituto de Telecomunicações, Campus de Santiago, 3810-193 Aveiro, Portugal; 2University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal In this work, we present proof of concept of a Raman based distributed temperature sensor using standard telecommunication fiber as the sensing element. To allow coexistence with data transmission, a pump source with a wavelength of 1064 nm is used. The proposed DTS is characterized in the range of 20 °C to 100 °C, using the ratio between the Raman band’s powers linearized. We established a characteristic curve of the sensor with a sensitivity of 0.0018±0.0001 /°C, showing that the proposed DTS can detect temperature variations. This work is the first step forward in the development of distributed sensors that coexist with data transmission over the same optical fiber. 9:30am - 9:45am
ID: 369 / TOM9 S07: 5 TOM 9 Applications of Optics and Photonics Accurate absorption intensities of ozone in a wide IR spectral range from experimental measurements and ab initio calculations 1Tomsk State University, Russia; 2Institute of Atmospheric Optics, SB Acad.Sci.,Russia; 3University of Reims, France Recent results of a long-term effort of Tomsk-Reims research teams on accurate intensity data obtained from high-resolution absorption spectra of ozone suitable for the atmospheric remote sensing in a wide IR range are summarized. This includes vibronic bands corresponding to the transitions towards triplet electronic states near 1 micron, and vibration-rotation bands covering the far-infrared and near-infrared ranges. |
8:30am - 10:00am | TOM8 S04: New trends in Ultrafast Science Location: Givry/Savigny Session Chair: Lucile Rutkowski, Institut de Physique de Rennes, UMR CNRS 6251, France |
|
8:30am - 9:00am
Invited ID: 536 / TOM8 S04: 1 TOM 8 Ultrafast Optics Quantitative and material-specific nanoscale imaging with table-top high harmonic sources Friedrich Schiller University Jena, Germany Quantitative and Material-specific Nanoscale imaging with Table-top High Harmonic Sources 9:00am - 9:15am
ID: 311 / TOM8 S04: 2 TOM 8 Ultrafast Optics The master equation for passive modelocking 1Università dell'Insubria, Italy; 2Aston University, UK; 3Universitat Politècnica de València, Spain; 4Universitat de València, Spain Passive modelocking (PML) of lasers is pivotal in modern science and industry. Here, solving a half-century-long challenge, we present the first master equation (ME) describing PML on all time scales, from Q-switched to fundamental and harmonic modelocking, valid for both slow and fast saturable absorption and short and long cavities. The proposed ME should become the workhorse for analytical and numerical studies of ultrafast lasers in both the photonics engineering and laser physics communities. 9:15am - 9:30am
ID: 329 / TOM8 S04: 3 TOM 8 Ultrafast Optics Experimental demonstration of an optimized method to generate multi-pulse structures in mode-locked fibre laser 1Laboratoire ICB, France; 2Institut Universitaire de France (IUF), 1 rue Descartes, Paris, France We present here an experimental demonstration of a new method to access the multi-pulse regime in mode-locked fibre laser. This method allows us to drastically reduce the pumping power, while having a stable train of multiple pulses. 9:30am - 9:45am
ID: 494 / TOM8 S04: 4 TOM 8 Ultrafast Optics Machine learning-assisted extreme events forecasting in Kerr ring resonators 1Université de Lille, France; 2Université d'Angers; 3Universidad de Chile Predicting complex nonlinear dynamical systems has been even more urgent because of the emergence of extreme events such as earthquakes, volcanic eruptions, extreme weather events (lightning, hurricanes/cyclones, blizzards, tornadoes), and giant oceanic rogue waves, to mention a few. The recent milestones in the machine learning framework offer a new prospect in this area. For a high dimensional chaotic system, increasing the system’s size causes an augmentation of the complexity and, finally, the size of the artificial neural network. Here, we propose a new supervised machine learning strategy to locally forecast bursts occurring in the turbulent regime of a fiber ring cavity. 9:45am - 10:00am
ID: 236 / TOM8 S04: 5 TOM 8 Ultrafast Optics High-precision phase plate for targeted generation of pseudorandom femtosecond pulses Institute of Plasma Physics of the Czech Academy of Science, Czech Republic The targeted generation of fs pulses is essential for a variety of applications and it is routinely carried out by 4f pulse shapers. However, this seemingly simple task is complicated by hidden experimental limitations, such as modulator crosstalk or pixelation. We present an approach to overcome this issue by using a high-precision phase plate with a phase change characterized with /500 precision. We generated pseudorandom pulses using a 4f pulse shaper by using a structured PMMA plate with the high-precision predefined shape made by the SPDT machine. We study the accuracy, reproducibility, as well as the sufficiency, and limits of the method. The generated pulses are characterized using the FROG method. The reconstructed pulses’ shapes and their spectral phases are compared to the results of simulations. 10:00am - 10:15am
ID: 471 / TOM8 S04: 6 TOM 8 Ultrafast Optics High nonlinearities in gas-filled multipass cells 1Institute of Applied Physics, Abbe Center of Photonics, Friedrich Schiller University Jena, Albert-Einstein-Str. 6, 07745 Jena, Germany; 2Helmholtz-Institute Jena, Fröbelstieg 3, 07743 Jena, Germany; 3GSI Helmholtzzentrum für Schwerionenforschung, Planckstraße 1, 64291 Darmstadt, Germany; 4Fraunhofer Institute for Applied Optics and Precision Engineering, Albert-Einstein-Str. 7, 07745 Jena, Germany The impact of the amount of nonlinearity per focal pass on the beam quality in gas-filled Herriott-type multipass cells (MPCs) is investigated. Through the variation of the gas pressure, the peak nonlinear phase shifts per focal pass was varied from 0.8 rad up to 5.9 rad, which is the highest value demonstrated in a MPC. Simultaneous monitoring of the effective homogeneity [1] and M² revealed no degradation of either. Supported by numeric simulations the findings suggest that the nonlinearity per focal pass in gas-filled MPCs below the self-focusing limit is not limited by spatio-spectral couplings. The presented findings become especially important for challenging regimes such as high compression factors and few-cycle pulses. Here the reduction of passes can significantly boost the transmission and optimized designs may enable the technology to move towards the single-cycle regime. |
8:30am - 10:00am | TOM1 S06: Materials II Location: Mercurey Session Chair: Frederic Gardes, Southampton University, United Kingdom |
|
8:30am - 9:00am
Invited ID: 529 / TOM1 S06: 1 TOM 1 Silicon Photonics and Integrated Optics The future of integrated silicon photonics for optical communications Université Paris Saclay, France Silicon photonics has been largely developed as a platform to address the future challenges in several applications including datacom, sensing or optical communications, among others. However, the properties of silicon itself is not enough to overcome all limitations in terms of speed, power consumption and scalability. Especially, silicon exhibits strong two photon absorption (TPA) and is centrosymmetric limiting the use of its nonlinear optical properties including Kerr and Pockels effects. New strategies have then been encouraged based on the heterogeneous integration of new materials in the silicon photonics platform. In this perspective, the recent trends in the development of new materials with optical properties complementary to the silicon and silicon nitride properties will be presented. In particular, the presentation will focus in a new integration approach of doped crystalline-oxides on silicon and silicon nitride photonics platform. Especially, the integration of doped-zirconia (ZrO2), compatible with CMOS technology has been developed. Indeed, such an oxide exhibits linear and nonlinear optical properties suitable to address the challenges of silicon photonics: low propagation loss, no two-photon absorption (TPA) due to its large bandgap energy, a large transparency window from the ultraviolet to the mid-infrared, Kerr and Pockels effect, and light emission. 9:00am - 9:15am
ID: 468 / TOM1 S06: 2 TOM 1 Silicon Photonics and Integrated Optics Mid-IR linear optical properties of hybrid Sb2S3/SiGe waveguides 1Institut des Nanotechnologies de Lyon, France; 2RMIT University, Australia; 3CEA-Leti, France; 4CNRS Laboratoire des Technologies de la Microélectronique, France We study the antimony trisulfide’s (Sb2S3) linear optical properties for potential applications in reconfigurable chip-based supercontinuum mid-IR sources. We experimentally demonstrate that Sb2S3 cladding on SiGe-on-Si waveguides induces relatively low extra propagation loss below 1 dB/cm between 3.3 and 3.9 μm wavelength. 9:15am - 9:45am
Invited ID: 533 / TOM1 S06: 3 TOM 1 Silicon Photonics and Integrated Optics Integrated silicon nanophotonics with subwavelength and resonant metamaterials National Research Council, Canada Since their first demonstration more than 15 years ago, subwavelength metamaterials in silicon photonic devices have attracted increasing research interest while also breaking into commercial applications. We will discuss recent advances in this research field, in particular novel components and circuits for beam steering applications, on-chip filtering and quantum optics. The use of Mie resonant particle chains as on-chip waveguides has only recently been demonstrated and is opening the door to a new and exciting branch of integrated metamaterials research. We will review the early work in this area. 9:45am - 10:00am
ID: 521 / TOM1 S06: 4 TOM 1 Silicon Photonics and Integrated Optics Heterogeneous interconnection of low-loss and dense material platforms using adiabatic tapering coupler Delft University of Technology, Netherlands, The Recently, we successfully realized amorphous silicon carbide (a-SiC) integrated photonics with optical losses as low as 0.78 dB/cm. Moreover, the deposition of a-SiC was done at 150 ℃, which enables successful lift of a-SiC as an additive step to existing photonics circuits. In this work, we present an adiabatic taper coupler which provides bidirectional lossless connection between two integrated photonics platforms: thin-film silicon nitride (Si3N4) and a-SiC. Normalized power transmission of 96.61% is presented, and the coupler enables strong confinement when coupling from weakly confined thin-film device to normal thickness device. By utilizing such a coupler as bridge, switching back and forth between Si3N4 and a-SiC platforms can be easily realized. This allow us to carry out applications including quantum interference and digital Fourier spectroscopy, in which long optical delay lines are constructed on Si3N4 and highly integrated circuits are built on a-SiC. |
8:30am - 10:00am | ESR S02: Early Stage Researcher Session Location: St Romain Session Chair: Roman Vincent Calpe, University of Eastern Finland, Finland Session Chair: Pierre Balage, Université de Bordeaux, CNRS, CEA, CELIA UMR5107, France |
8:30am - 10:00am | TOM7 S06: Quantum cascade frequency combs Location: Santenay/Chablis Session Chair: Gianluca Galzerano, Istituto di Fotonica e Nanotecnologie - CNR, Italy |
|
8:30am - 9:00am
Invited ID: 526 / TOM7 S06: 1 TOM 7 Optical frequency combs Frequency- and amplitude-modulated combs at long wavelengths Notre Dame University, United States of America The longwave infrared and terahertz bands present unique obstacles for the generation of compact broadband frequency combs. I will discuss some of our work that aims to address this grand challenge, focusing on two types of combs. First, I will discuss our work on quantum cascade laser-based frequency combs, light sources that are able to directly generate broadband combs through an active cavity nonlinearity. In particular, I will discuss how our work on terahertz combs led to the discovery of frequency-modulated combs, a fundamental comb state that can manifest in any laser at any wavelength. This mode of operation is well-suited for efficient and broadband comb generation in semiconductor lasers. Following this, I will discuss some of our recent work on low-loss passive photonic platforms in the longwave infrared based on hybrid photonic integration. This approach allowed us to create optical microresonators in the longwave infrared with quality factors two orders of magnitude better than the state-of-the-art, offering a promising direction for the production of broadband microresonator-based solitons. 9:00am - 9:15am
ID: 569 / TOM7 S06: 2 TOM 7 Optical frequency combs Inverse spectral design of microcombs via meta-dispersion in photonic-crystal ring resonators Laboratoire ICB, France Inverse design is used to spectrally shape Kerr microcombs via dispersion optimization. We experimentally demonstrate flexible ‘meta’ dispersion control using selective multimode hybridization in photonic crystal ring resonators, and present initial comb shaping results. 9:30am - 9:45am
ID: 250 / TOM7 S06: 4 TOM 7 Optical frequency combs Radio-frequency enabled comb in ring Quantum Cascade Lasers Institute for Quantum Electronics, Swiss Federal Institute of Technology (ETH) Zürich, Auguste-Piccard-Hof 1, 8093 Zürich Frequency combs (FC) generated by quantum cascade lasers (QCLs) are a promising tool for precision spectroscopy and gas sensing. Recently, ring QCLs have emerged as a new platform for generating FC with unique advantages over Fabry-Perot geometry. While the bandwidth of such Fabry-Perot devices is determined by the device geometry and dispersion, radio-frequency injected devices with circular geometry enable the exploitation of the full gain bandwidth in a controlled manner. Together with this platform, a predictive analytical model that shows excellent agreement with the experimental data was developed. Our results pave the way for a new approach for frequency comb generation based on fast-gain saturation. 9:45am - 10:00am
ID: 466 / TOM7 S06: 5 TOM 7 Optical frequency combs Coherent walk and lock in driven fast-gain frequency-combs ETH Zurich, Switzerland Locking multiple modes into a frequency comb is key for multiple metrological applications, and a great effort has been therefore invested in this challenge over the last decade. The most common techniques are based on either nonlinearities or modulation of the cavity, while the latter is considered the more controllable method to produce frequency combs. The modulation couples cavity modes and creates a lattice in a synthetic dimension with coherent walk dynamics, but typically these dynamics are overthrown by the dissipative processes, leading to a spectrum that is narrow relatively to the full frequency ladder potential. Here we propose and demonstrate that by using fast-gain we preserve the full potential of the coherent walk and lock the frequency comb at its maximum possible bandwidth. Moreover, we find in our system a unique regime of dissipative fast-gain Bloch oscillations. We demonstrate these dynamics in RF-modulated quantum cascade laser ring devices. 10:00am - 10:15am
ID: 326 / TOM7 S06: 6 TOM 7 Optical frequency combs Coherent averaging quantum cascade laser based dual-comb spectrometer with near infrared light illumination control 1Laboratoire Temps-Fréquence, Institut de Physique, Université de Neuchâtel, Avenue de Bellevaux 51, 2000 Neuchâtel, Switzerland; 2Institute for Quantum Electronics, ETH Zurich, Auguste-Piccard-Hof 1, 8093 Zurich, Switzerland We present a dual-comb spectrometer based on quantum cascade lasers operating at 7.7 µm with a stabilization scheme that enables coherent averaging. We show that by illuminating a low cost near-infrared light source of the front facet of the quantum cascade laser, we can tightly lock one comb line of the dual-comb spectrum, resulting in narrow linewidth with sub-radian integrated phase noise for all RF comb lines. |
8:30am - 10:00am | TOM4 S08: Linear and Nonlinear Metasurfaces #2 Location: Musigny/Pommard/Volnay Session Chair: Nicolas Bonod, CNRS, France |
|
8:30am - 8:45am
ID: 356 / TOM4 S08: 1 TOM 4 Nanophotonics Patterning of SiO2 interfaces for radiative cooling applications 1School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, PR China; 2European Laboratory for Non-linear Spectroscopy (LENS), University of Florence, Sesto Fiorentino, 50019, Italy; 3Center for Composite Materials and Structure, Harbin Institute of Technology, Harbin, 150001, PR China; 4Istituto Nazionale di Ricerca Metrologica (INRiM), Turin, 10135, Italy 8:45am - 9:00am
ID: 254 / TOM4 S08: 2 TOM 4 Nanophotonics Dielectric multilayer cavity coupled metamaterial University of Eastern Finland, Finland 9:00am - 9:15am
ID: 211 / TOM4 S08: 3 TOM 4 Nanophotonics Bispectral optical cavity based on twin metamirrors 1Technische Universität Braunschweig, Institute for Semiconductor Technology; 2CAVITY technologies UG; 3Laboratory for Emerging Nanometrology (LENA); 4Physikalisch-Technische Bundesanstalt 9:15am - 9:30am
ID: 296 / TOM4 S08: 4 TOM 4 Nanophotonics Surface vs bulk contribution to the second-harmonic generation in AlGaAs nanoresonators 1Physics Department, Politecnico di Milano, Piazza Leonardo Da Vinci 32, 20133 Milano, Italy; 2Department of Information Engineering, University of Brescia, Via Branze 38, 25123 Brescia, Italy; 3Université de Paris, CNRS, Laboratoire Matériaux et Phénomènes Quantiques, 75013 Paris, France; 4Centre de Nanosciences et de Nanotechnologies, CNRS, Université Paris-Saclay, 91120 Palaiseau, France 9:30am - 9:45am
ID: 133 / TOM4 S08: 5 TOM 4 Nanophotonics Enhanced intrinsic linear and nonlinear optical properties in colloidal dielectric resonators Institut Langevin, ESPCI Paris, Université PSL, CNRS, 75005 Paris, France 9:45am - 10:00am
ID: 239 / TOM4 S08: 6 TOM 4 Nanophotonics High aspect ratio high slanted grating replication with minimal residual layer thickness 1Google Inc.; 2Google Inc. |
8:30am - 10:00am | TOM6 S06: Nonlinear multimode fiber optics Location: Meursault/ Nuit ST-G./Corton Session Chair: Kamel Bencheikh, Center for Nanoscience and Technology, France |
|
8:30am - 9:00am
Invited ID: 287 / TOM6 S06: 1 TOM 6 Nonlinear and Quantum Optics Thermalization of light waves in multimode optical fibers: Negative temperatures equilibrium states and the role of disorder 1CNRS - Université de Bourgogne, ICB, Dijon, France; 2CMAP, CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, France; 3CEA, DAM, Arpajon, France; 4Université Côte d’Azur, CNRS, Institut de Physique de Nice, Nice, France; 5Institute of Physical Chemistry Polish Academy of Sciences, Warsaw, Poland Nonlinear random waves exhibit a phenomenon of irreversible thermalization, in analogy with the thermalization of a classical gas system. This irreversible process of thermalization to the Rayleigh-Jeans equilibrium distribution has been recently observed experimentally in multimode optical fibers. Here we discuss a recent progress along two different directions. Firstly, we report the observation of thermalization to negative temperature equilibrium states, in which high-order fiber modes are more populated than low-order modes. Secondly, we analyze the impact of disorder inherent to light propagation in multimode fibers. We identify an unexpected regime in which strong random coupling among non-degenerate modes leads to a nonequilibrium process of thermalization. 9:00am - 9:15am
ID: 364 / TOM6 S06: 2 TOM 6 Nonlinear and Quantum Optics Full-beam spatial coherence measurements of supercontinuum generation in multimode fibers tampere university, Finland We study experimentally the spatial coherence across the full spatial beam profile of supercontinuum light generated in both in graded-index and step-index multimode fibers. We observe a decrease of the coherence area with an increase of the injected pump power. Numerical simulations based on linearly polarized modes and mode coupling theory are in good agreement with our experiments and indicate that the decrease of coherence area is strongly related to a change in the modal amplitude distribution. 9:15am - 9:30am
ID: 360 / TOM6 S06: 3 TOM 6 Nonlinear and Quantum Optics Mid-infrared generation beyond 3.5 μm in a graded-index silica fiber 1Laboratoire Interdisciplinaire Carnot de Bourgogne, UMR6303 CNRS-Université de Bourgogne, Dijon, France; 2Department of Optics and Photonics, Wrocław University of Science and Technology, Wrocław, Poland We present theoretical as well as experimental evidence of far-detuned nonlinear wavelength conversion towards the mid-infrared, namely beyond 3.5 μm, in a few-mode graded-index silica fiber pumped at 1.064 μm. We take into account the full frequency-dependence of the propagation constants, which allows us to obtain excellent agreement of theoretical predictions with experimental observations and provides new and accurate interpretation of intramodal and intermodal four-wave mixing processes in few-mode fibers. 9:30am - 10:00am
Invited ID: 275 / TOM6 S06: 4 TOM 6 Nonlinear and Quantum Optics Beam-by-beam Kerr clean-up in multimode optical fibres 1DIET, Sapienza University of Rome, Via Eudossiana 18, 00184 Rome, Italy; 2Department of Physics, University of Calabria, Via P. Bucci, 87069 Rende, Italy; 3XLIM, UMR CNRS 7252, University of Limoges, 123 Avenue A. Thomas, 87060 Limoges, France; 4Institute of Physical Chemistry, Polish Academy of Sciences, Warsaw, Poland; 5Institute of Automation and Electrometry SBRAS, 1 ac. Koptyug ave., Novosibirsk 630090, Russia; 6Novosibirsk State University, Novosibirsk 630090, Russia We propose and demonstrate the concept of beam-by-beam cleaning in multimode optical fibres, i.e., the increase of the spatial quality of an intense laser beam, induced by a relatively weak, quasi singlemode seed beam. This effect, which relies on the Kerr nonlinearity of the fibre, is quite efficient: a seed beam is capable of providing a bell-shape to a ten times more powerful beam. Our results pave the way for the development of a new class of all-optical switching devices for intense laser beams. |
10:00am - 10:30am | Coffee Break Location: Hall des grands Echézeaux |
10:30am - 10:45am | Best student presentation Awards Location: Amphithéatre Romanéé Conti |
10:45am - 11:45am | PLENARY SPEECH by Ursula Keller "Ultrafast dual-comb lasers" Location: Amphithéatre Romanéé Conti |
|
ID: 103
Plenary talk Ultrafast dual-comb lasers ETH Zurich, Physics Department, Switzerland Dual-comb molecular and pump-probe spectroscopy with equivalent time sampling are currently limited by the cost, complexity, and size of conventional optical comb systems, based on two modelocked lasers and corresponding feedback loops. The single-cavity dual-comb diode-pumped solid-state and semiconductor lasers, however, substantially reduce the complexity of existing systems to a single compact free-running laser. In comparison to other competing new approaches such as quantum cascade lasers or micro resonator combs, these dual-comb lasers provide substantially more power per comb line with low linewidth and noise, and are ideally suited for a 40 MHz to 5 GHz comb spacing. The optimal operating regime lies within this range for many different applications including spectroscopy and thin-film inspection, allowing for fast, accurate, and sensitive measurements. |
11:45am - 12:00pm | JEOS:RP HIGHLIGHT by Tatiana Novikova Location: Amphithéatre Romanéé Conti Tatiana Novikova, the winner of the EOS Prize, will give a presentation on their awarded work on Optical diagnosis of gastric tissue biopsies with Mueller microscopy and statistical analysis |
12:00pm - 12:15pm | CLOSING CEREMONY Location: Amphithéatre Romanéé Conti |