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!

Session Overview
TOM13 S16: Ultrafast: High harmonic generation and XUV science 2
Friday, 17/Sept/2021:
11:15 - 12:45

Session Chair: Tenio Popmintchev, University of California San Diego, United States of America
Location: Aula 1

1st floor

11:15 - 11:30
ID: 321 / TOM13 S16: 1
TOM 13 Ultrafast Optical Technologies and Applications

A new tool for measuring ultrashort laser pulses directly on-target during high-intensity laser-matter interactions

Helder M. Crespo1,2, Tobias Witting3, Miguel Canhota2, Miguel Miranda4, John W.G. Tisch1

1Imperial College London, United Kingdom; 2Faculty of Sciences, University of Porto, Portugal; 3Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy, Berlin, Germany; 4Sphere Ultrafast Photonics, Porto, Portugal

We present a new technique for the temporal measurement of intense ultrashort laser pulses directly on target and at full laser power. The setup can be easily added to an existing beamline, providing pulse characterisation at the sample location. This allows pulse optimization and meaningful comparison with theory, while revealing potential pulse distortions occurring in or on the target. We demonstrate the technique by measuring intense 4-fs pulses in conditions optimized for high-harmonic generation and show that it enables measuring pulses at extreme relativistic intensities presently inaccessible to other diagnostics.

11:30 - 11:45
ID: 342 / TOM13 S16: 2
TOM 13 Ultrafast Optical Technologies and Applications

Controlling the focusing properties of attosecond XUV beams

Eric Constant1, Fabrice Catoire2, Kevin Veyrinas2, Constance Valentin2, Jan Vabek2,3,4, Eric Mevel2

1Université de Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière (ILM), rue A. Byron, 69622 Villeurbanne, France; 2Université de Bordeaux, CNRS, CEA, Centre Laser Intenses et Applications (CELIA), 43 rue P. Noailles, 33400 Talence, France; 3ELI Beamlines Centre, Institute of Physics, Czech Academy of Sciences, Za Radnicí 835, 25241 Dolní Břežany, Czech Republic; 4Czech Technical University in Prague – Faculty of Nuclear Sciences and Physical Engineering, Jugoslávských partyzánů 1580/3, 160 00 Praha 6, Czech Republic

By controlling high order harmonic generation in gases and characterizing the XUV beams properties, we observe that high order harmonics are usually not all focused at the same longitudinal position. We show that this focusing can be modified by controling the XUV wavefront directly in the generating medium and achieve optics free focusing of the attosecond XUV beam with micrometer size of the XUV foci. We use this effect to perform broad band XUV spectral filtering with high efficiency and without temporal stretching of the attosecond pulses.

11:45 - 12:15
ID: 146 / TOM13 S16: 3
TOM 13 Ultrafast Optical Technologies and Applications

13 mW average power ultrafast HHG source

Robert Klas1,2, Alexander Kirsche1,2, Martin Gebhardt1,2, Joachim Buldt1, Henning Stark1, Steffen Hädrich3, Jan Rothhardt1,2,4, Jens Limpert1,2,4

1Institute of Applied Physics, Abbe Center of Photonics, Friedrich-Schiller-University Jena, Albert-Einstein-Str. 15, 07745 Jena, Germany.; 2Helmholtz-Institute Jena, Fröbelstieg 3, 07743 Jena, Germany.; 3Active Fiber Systems GmbH, Ernst-Ruska-Ring 17, 07745 Jena, Germany.; 4Fraunhofer Institute for Applied Optics and Precision Engineering, Albert-Einstein-Str. 7, 07745 Jena, Germany.

In this contribution, a novel class of extreme ultraviolet (XUV) sources based on high-harmonic-generation (HHG) is presented. The source realized in this work is driven by a frequency doubled and post compressed Yb-fiber laser system, delivering 51μJ, 18.6fs pulses at a central wavelength of 515nm and a repetition rate of 1MHz. Employing this unique laser system for HHG, results in a record high XUV average power of 12.9mW in a single harmonic line at 26.5eV with sub-6fs pulse duration – surpassing previously reported HHG sources by one order of magnitude.

12:15 - 12:30
ID: 443 / TOM13 S16: 4
TOM 13 Ultrafast Optical Technologies and Applications

Broadband UV-Vis frequency combs from high-harmonic generation in quasi-phase-matched waveguides

Jay Rutledge1, Anthony Catanese1, Daniel Hickstein2,3, Thomas Allison1, Scott Diddams2,3, Abijith Kowligy2,3

1Stony Brook University, USA; 2National Institute of Standards and Technology, USA; 3Dept. of Physics, University of Colorado, Boulder

We report efficient, phase-coherent high-harmonic generation in chirped periodically poled lithium niobate waveguides pumped with a watt-scale 3 $\mu$m frequency comb. Simulations support a mechanism of cascaded quadratic nonlinearity and provide insight into spectral optimization.

12:30 - 12:45
ID: 250 / TOM13 S16: 5
TOM 13 Ultrafast Optical Technologies and Applications

Raman red-shift compressor: A simple approach for scaling the high harmonic generation cut-off

Katherine Légaré1, Reza Safaei1, Guillaume Barrette1, Loïc Arias1, Philippe Lassonde1, Heide Ibrahim1, Boris Vodungbo2, Emmanuelle Jal2, Jan Lüning3, Nicolas Jaouen4, Andrius Baltuška5, François Légaré1, Guangyu Fan1

1Institut National de la Recherche Scientifique, Canada; 2Sorbonne Université, France; 3Helmholtz-Zentrum Berlin, Germany; 4Synchrotron SOLEIL, France; 5Vienna University of Technology, Austria

Propagation of sub-picosecond laser pulses in a gas-filled hollow-core fibre creates red-shifted multidimensional solitary states through intermodal Raman scattering. The pulses, which can be compressed to few-cycle durations by simple transmission through materials with positive dispersion, are used to generate high harmonics in argon. Due to the characteristics of the ultrashort driver pulses, the highest generated photon energy is increased, allowing for the implementation of photon-demanding applications with high photon energy requirements. As a demonstration, the source is used for resonant magnetic scattering measurements at the M2,3 edge of cobalt.