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1–5 Jul 2019
University of Szeged Congress Centre
Europe/Budapest timezone

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Session

Novel diagnostics and control of high-order harmonics

5 Jul 2019, 08:30
University of Szeged Congress Centre

University of Szeged Congress Centre

Ady Square 10., 6722 Szeged, Hungary

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  1. 311. Generation of Structured EUV High-Harmonic Beams and Attosecond Pulses
    Dr Carlos Hernández-García (University of Salamanca)
    05/07/2019, 08:30
    invited talks

    Recent advances in nonlinear optics have enabled the generation of structured attosecond pulses with controllable angular momentum properties, including extreme-ultraviolet beams with spin and orbital angular momentum, and high-harmonics with selftorque --- time-dependent orbital angular momentum.

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  2. 129. Single-Shot Wavefront Measurements of High-Order Harmonics
    Hugo Dacasa Pereira (Lund University)
    05/07/2019, 09:00
    oral

    We use a Hartmann wavefront sensor to measure single-shot wavefronts of high-order harmonics to study how they vary with generation parameters. We then use a new type of sensor with spectral resolution.

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  3. 178. Extreme-ultraviolet Refractive Optics
    Oleg Kornilov (Max-Born-Institut)
    05/07/2019, 09:15
    oral

    Here we demonstrate control over the refraction of XUV radiation by using a gas jet with a density gradient across the XUV beam profile. In a first set of experiments, a gas-phase prism and a gas-phase lens are demonstrated.

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  4. 104. Mirrorless Focusing of High Order Harmonics by XUV Wavefront Control
    Dr Eric Constant (ILM CNRS Univ Lyon 1)
    05/07/2019, 09:30
    oral

    By studying the spatial profiles of high-order harmonics generated in a gas jet, we show how harmonic beam profiles can be controlled and demonstrate that harmonics can be generated as converging beams thereby focused without XUV optics

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  5. 113. Focusing and Spectral Filtering of XUV Harmonics without Optics
    Kévin Veyrinas (CELIA CNRS Univ Bordeaux CEA)
    05/07/2019, 09:45
    oral

    By controlling the intensity profile and wavefront of XUV high-order harmonics generated in a gas jet, we establish the possibility of focusing harmonic beams to micrometer spot size and achieve efficient spectral filtering without resorting to any XUV optics.

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  6. 14. Interferometric Attosecond Lock-in Measurement of Extreme Ultraviolet Circular Dichroism
    Mr Omer Kneller (Weizmann Institute of Science)
    05/07/2019, 10:00
    oral

    We establish an extreme ultraviolet lock-in detection scheme, allowing the isolation and amplification of weak chiral signals, by achieving a direct time-domain polarization control. We demonstrate it by a phase-resolved measurement of magnetic circular dichroism.

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