Optics-less focusing of XUV high-order harmonics
| Autor: | C. Péjot, Eric Mével, F. Catoire, V. V. Strelkov, Antoine Dubrouil, Frédéric Burgy, L. Quintard, Dominique Descamps, J. Vabek, Eric Constant, O. Hort |
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| Přispěvatelé: | Centre d'Etudes Lasers Intenses et Applications (CELIA), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Bordeaux (UB), A. M. Prokhorov General Physics Institute (GPI), Russian Academy of Sciences [Moscow] (RAS), Institute of Physics, ELI Beamlines, Academy of Sciences of the Czech Republic, Femtoeasy, Institut Lumière Matière [Villeurbanne] (ILM), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon, Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow Institute of Physics and Technology (State University), Structure et dynamique multi-échelle des édifices moléculaires (DYNAMO), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Bordeaux (UB)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), ANR-16-CE30-0012,CIRCE,Dynamique de relaxation induite par la correlation dans les molecules complexes excitées par UVX(2016) |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Attosecond
01 natural sciences 010309 optics Optics Physics::Plasma Physics 0103 physical sciences Broadband Physics::Atomic and Molecular Clusters High harmonic generation 010306 general physics Research Articles ComputingMilieux_MISCELLANEOUS Physics [PHYS]Physics [physics] Multidisciplinary business.industry High order harmonics SciAdv r-articles Arbitrarily large Harmonics Extreme ultraviolet XUV Harmonic Physics::Accelerator Physics Astrophysics::Earth and Planetary Astrophysics business Beam (structure) Research Article |
| Zdroj: | Science Advances Science Advances, American Association for the Advancement of Science (AAAS), 2019, 5 (4), ⟨10.1126/sciadv.aau7175⟩ Science Advances, American Association for the Advancement of Science (AAAS), 2019, 5 (4), pp.eaau7175. ⟨10.1126/sciadv.aau7175⟩ Science Advances, 2019, 5 (4), pp.eaau7175. ⟨10.1126/sciadv.aau7175⟩ |
| ISSN: | 2375-2548 |
| Popis: | Controlling generation of XUV high-order harmonic beams provides focusing of attosecond pulses without any XUV optics. By experimentally studying high-order harmonic beams generated in gases, we show how the spatial characteristics of these ultrashort extreme-ultraviolet (XUV) beams can be finely controlled when a single fundamental beam generates harmonics in a thin gas medium. We demonstrate that these XUV beams can be emitted as converging beams and thereby get focused after generation. We study this optics-less focusing using a spatially chirped beam that acts as a probe located inside the harmonic generation medium. We analyze the XUV beam evolution with an analytical model and obtain very good agreement with experimental measurements. The XUV foci sizes and positions vary strongly with the harmonic order, and the XUV waist can be located at arbitrarily large distances from the generating medium. We discuss how intense XUV fields can be obtained with optics-less focusing and how the order-dependent XUV beam characteristics are compatible with broadband XUV irradiation and attosecond science. |
| Databáze: | OpenAIRE |
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