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AKBP: Arbeitskreis Beschleunigerphysik
AKBP 7: Experiments for Advanced Light Sources
AKBP 7.1: Gruppenbericht
Mittwoch, 22. März 2023, 14:00–14:30, HSZ/0304
Seeded free-electron laser driven by laser-plasma accelerators - a quest to compact high-brilliance x-ray lasers — •Arie Irman1, Amin Ghaith1, Marie Labat2, Eléonore Roussel3, Jurjen Couperus-Cabadag1, Alexandre Loulergue2, Susanne Schöbel1, Maxwell LaBerge1, Patrick Ufer1, Yen-Yu Chang1, Nicolas Hubert2, Moussa El Ajjouri2, Anthony Berlioux2, Mathieu Valléau2, Philippe Berteaud2, Fréderic Blache2, Sébastien Corde4, Alexander Debus1, Carlos De Oliviera2, Jean-Pierre Duval2, Yannick Dietrich2, Christopher Eisenmann1, Julien Gautier2, René Gebhardt1, Simon Grams1, Uwe Helbig1, Christian Herbeaux2, Charles Kitégi2, Olena Kononenko4, Michael Kuntzsch1, Stéphane Lê2, Bruno Leluan2, Fabrice Marteau2, Manh Huy Nguyen2, Richard Pausch1, Pascal Rousseau4, Mourad Sebdaoui2, Klaus Steiniger1, Keihan Tavakoli2, Cédric Thaury4, Marc Vandenberghe2, José Vétéran2, Victor Malka4, Driss Oumbarek-Espinos2, Damien Pereira2, Thomas Püschel1, Jean-Paul Ricaud2, Patrick Rommeluère2, and Ulrich Schramm1 — 1Helmholtz-Zentrum Dresden-Rossendorf e. V. (Germany); — 2Synchrotron SOLEIL (France) — 3Lab. de Physique des Lasers, Atomes et Molécules (France) — 4Lab. d'Optique Appliquée (France);
Free-electron lasers (FELs) produce high-brilliance coherent light pulses, serving as versatile research tools in fundamental science and applications. The recent development of short-wavelength seeded FEL now allows for unprecedented levels of control on longitudinal coherence, opening new scientific avenues such as ultra-fast dynamics on complex systems and X-ray nonlinear optics. Although those devices rely on state-of-the-art large-scale accelerators, advancements on laser-plasma accelerators, which harness gigavolt-per-centimetre accelerating fields, showcase a promising technology as compact drivers for FELs. This talk will review the current status of global effort toward realization of compact FELs. In particular, we present the development of high-quality laser-plasma accelerated electron beams and the commissioning of the COXINEL - FEL beamline, as well as experimental demonstration of FEL lasing at 270 nm in a seeded configuration. Control over the radiation wavelength is achieved with an improved bandwidth stability. Furthermore, the appearance of interference fringes, resulting from the interaction between the phase-locked emitted radiation and the seed, confirms longitudinal coherence, representing a key feature of such a seeded FEL. We anticipate a navigable pathway toward smaller-scale free-electron lasers at extreme ultra-violet wavelengths.