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Article Dans Une Revue Optics Express Année : 2020

Towards subpicosecond pulses from solid target plasma based seeded soft X-ray laser

Alok Kumar Pandey
  • Fonction : Auteur
Irene Papagiannouli
Fabrice Sanson
Elsa Baynard
  • Fonction : Auteur
Julien Demailly
  • Fonction : Auteur
Sophie Kazamias
  • Fonction : Auteur
  • PersonId : 880137
Moana Pittman
  • Fonction : Auteur
Olivier Neveu
  • Fonction : Auteur
Bruno Lucas
Andrea Le Marec
  • Fonction : Auteur
Annie Klisnick
  • Fonction : Auteur
Olivier Larroche
  • Fonction : Auteur
David Ros
  • Fonction : Auteur
Olivier Guilbaud
  • Fonction : Auteur

Résumé

We investigate the coherence of plasma-based soft X-ray laser (XRL) for different conditions that can alter the electron density in the gain region. We first measure the source temporal coherence in amplified spontaneous emission (ASE) mode. We develop a data analysis procedure to extract both its spectral width and pulse duration. These findings are in agreement with the spectral line shape simulations and seeded operation experimental results. Utilizing the deduced spectral width and pulse duration in a one-dimensional Bloch-Maxwell code, we reproduce the experimental temporal coherence properties of the seeded-XRL. Finally, we demonstrate efficient lasing in ASE and seeded mode at an electron density two times higher than the routine conditions. In this regime, using Bloch-Maxwell modeling, we predict the pulse duration of the seeded XRL to be ∼ 500 f s.

Dates et versions

hal-02990541 , version 1 (05-11-2020)

Identifiants

Citer

Alok Kumar Pandey, Irene Papagiannouli, Fabrice Sanson, Elsa Baynard, Julien Demailly, et al.. Towards subpicosecond pulses from solid target plasma based seeded soft X-ray laser. Optics Express, 2020, 28 (20), pp.28924. ⟨10.1364/OE.399339⟩. ⟨hal-02990541⟩
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