Space–time characterization of ultra-intense femtosecond laser beams
| Autor: | V. Gallet, Antonin Borot, O. Gobert, G. Pariente, Fabien Quéré |
|---|---|
| Přispěvatelé: | Laboratoire Interactions, Dynamiques et Lasers (ex SPAM) (LIDyl), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Physique à Haute Intensité (PHI), Institut Rayonnement Matière de Saclay (IRAMIS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Laboratoire Interactions, Dynamiques et Lasers (ex SPAM) (LIDyl), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Université Nice Sophia Antipolis - Faculté de Médecine (UNS UFR Médecine), Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA), Serveurs Laser (SLIC), Université Nice Sophia Antipolis (1965 - 2019) (UNS) |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Electromagnetic field
Physics [PHYS]Physics [physics] Field (physics) business.industry Physics::Optics Particle accelerator 02 engineering and technology Laser 01 natural sciences Atomic and Molecular Physics and Optics Charged particle Electronic Optical and Magnetic Materials Characterization (materials science) law.invention 010309 optics 020210 optoelectronics & photonics Optics law 0103 physical sciences Femtosecond 0202 electrical engineering electronic engineering information engineering Spatial dependence business |
| Zdroj: | Nature Photonics Nature Photonics, Nature Publishing Group, 2016, 10, pp.547-553. ⟨10.1038/nphoton.2016.140⟩ Nature Photonics, 2016, 10, pp.547-553. ⟨10.1038/nphoton.2016.140⟩ |
| ISSN: | 1749-4885 1749-4893 |
| DOI: | 10.1038/nphoton.2016.140⟩ |
| Popis: | Femtosecond lasers can now deliver ultrahigh intensities at focus, making it possible to induce relativistic motion of charged particles with light and opening the way to new generations of compact particle accelerators and X-ray sources. With diameters of up to tens of centimetres, ultra-intense laser beams tend to suffer from spatiotemporal distortions, that is, a spatial dependence of their temporal properties that can dramatically reduce their peak intensities. At present, however, these intense electromagnetic fields are characterized and optimized in space and time separately. Here, we present the first complete spatiotemporal experimental reconstruction of the field E(t,r) for a 100 TW peak-power laser, and reveal the spatiotemporal distortions that can affect such beams. This new measurement capability opens the way to in-depth characterization and optimization of ultra-intense lasers and ultimately to the advanced control of relativistic motion of matter with femtosecond laser beams structured in space–time. The complete spatiotemporal characterization of a 100-TW laser beam highlights distortions that must be taken into account for present and future generations of ultra-intense lasers. |
| Databáze: | OpenAIRE |
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