Seeded free-electron laser driven by a compact laser plasma accelerator.

Autor: Labat, Marie, Cabadağ, Jurjen Couperus, Ghaith, Amin, Irman, Arie, Berlioux, Anthony, Berteaud, Philippe, Blache, Frédéric, Bock, Stefan, Bouvet, François, Briquez, Fabien, Chang, Yen-Yu, Corde, Sébastien, Debus, Alexander, De Oliveira, Carlos, Duval, Jean-Pierre, Dietrich, Yannick, El Ajjouri, Moussa, Eisenmann, Christoph, Gautier, Julien, Gebhardt, René
Zdroj: Nature Photonics; Feb2023, Vol. 17 Issue 2, p150-156, 7p
Abstrakt: Free-electron lasers generate high-brilliance coherent radiation at wavelengths spanning from the infrared to the X-ray domains. The recent development of short-wavelength seeded free-electron lasers 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 free-electron lasers. Using such footprint-reduced accelerators, exponential amplification of a shot-noise type of radiation in a self-amplified spontaneous emission configuration was recently achieved. However, employing this compact approach for the delivery of temporally coherent pulses in a controlled manner has remained a major challenge. Here we present the experimental demonstration of a laser-plasma accelerator-driven free-electron laser in a seeded configuration, where control over the radiation wavelength is accomplished. Furthermore, the appearance of interference fringes, resulting from the interaction between the phase-locked emitted radiation and the seed, confirms longitudinal coherence. Building on our scientific achievements, we anticipate a navigable pathway to extreme-ultraviolet wavelengths, paving the way towards smaller-scale free-electron lasers, unique tools for a multitude of applications in industry, laboratories and universities. Researchers demonstrate a laser-plasma accelerator-driven free-electron laser in a seeded configuration, where control over the radiation wavelength and longitudinal coherence are achieved. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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