Stable femtosecond X-rays with tunable polarization from a laser-driven accelerator

Andreas Döpp; Benoit Mahieu; Agustin Lifschitz; Cedric Thaury; Antoine Doche; Emilien Guillaume; Gabriele Grittani; Olle Lundh; Martin Hansson; Julien Gautier; Michaela Kozlova; Jean Philippe Goddet; Pascal Rousseau; Amar Tafzi; Victor Malka; Antoine Rousse; Sebastien Corde; Kim Ta Phuoc

doi:10.1038/lsa.2017.86

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Stable femtosecond X-rays with tunable polarization from a laser-driven accelerator

Original Articles

- Stable femtosecond X-rays with tunable polarization from a laser-driven accelerator
- Light: Science & Applications Vol. 6, Issue 4, (2017)
- Affiliations：
  
  1.Laboratoire d’Optique Appliquée, ENSTA, CNRS UMR7639, Ecole Polytechnique, Chemin de la Hunière, 91761 Palaiseau, France
  2.Present address: Ludwig-Maximilians-Universität München, Fakultät für Physik, Am Coulombwall 1, Garching 85748, Germany
  3.ELI Beamlines Project, Institute of Physics of the ASCR, Na Slovance 2, 18221 Prague 8, Czech Republic
  4.Department of Physics, Lund University, PO Box 118, 22100 Lund, Sweden
  5.Department of Physics and Complex Systems, Weizmann Institute of Science, 76100 Rehovot, Israel
- Author bio：
  
  A Döpp, Email: andreas.doepp@polytechnique.edu
  K Ta Phuoc, Email: kim.taphuoc@ensta-paristech.fr
- Funds：
- DOI：10.1038/lsa.2017.86
  CLC：
- Published：2017-12，
  
  Published Online：12 May 2017，
  
  Received：18 January 2017，
  
  Revised：04 May 2017，
  
  Accepted：10 May 2017
- Accepted：
Scan QR Code
Döpp, A. et al. Stable femtosecond X-rays with tunable polarization from a laser-driven accelerator. Light: Science & Applications, 6, e17086 (2017).
DOI：

Döpp, A. et al. Stable femtosecond X-rays with tunable polarization from a laser-driven accelerator. Light: Science & Applications, 6, e17086 (2017). DOI： 10.1038/lsa.2017.86.

摘要

Abstract

Technology based on high-peak-power lasers has the potential to provide compact and intense radiation sources for a wide range of innovative applications. In particular

electrons that are accelerated in the wakefield of an intense laser pulse oscillate around the propagation axis and emit X-rays. This betatron source

which essentially reproduces the principle of a synchrotron at the millimeter scale

provides bright radiation with femtosecond duration and high spatial coherence. However

despite its unique features

the usability of the betatron source has been constrained by its poor control and stability. In this article

we demonstrate the reliable production of X-ray beams with tunable polarization. Using ionization-induced injection in a gas mixture

the orbits of the relativistic electrons emitting the radiation are reproducible and controlled. We observe that both the signal and beam profile fluctuations are significantly reduced and that the beam pointing varies by less than a tenth of the beam divergence. The polarization ratio reaches 80%

and the polarization axis can easily be rotated. We anticipate a broad impact of the source

as its unprecedented performance opens the way for new applications.

关键词

Keywords

laser-plasma interactionlaser-wakefield accelerationsynchrotron light sources

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