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Bessel spatial profile of a soft x-ray laser beam

F. Tissandier 1 Stéphane Sebban 1 M. Ribiere 1 Julien Gautier 1 Philippe Zeitoun 1 Guillaume Lambert 1 Jean-Philippe Goddet 1 Frédéric Burgy 1 C. Valentin 1 Antoine Rousse 1 J. Nejdl 2 Tomas Mocek 2 G. Maynard 3
1 LOA - Laboratoire d'optique appliquée
2 PALS - Institute of Physics
3 LPGP - Laboratoire de physique des gaz et des plasmas
Abstract : We report far-field profile measurements of an optical-field-ionized high-order harmonic-seeded soft x-ray laser. We show that the beam transverse profile can be controlled between a regular Gaussian shape and a Bessel profile exhibiting several rings via the infrared laser pump intensity. These experimental data are supported by a complete numerical modeling including a two-dimensional plasma amplifier simulation and a two-level soft x-ray amplification using a Maxwell–Bloch treatment. This model takes into account the experimental high-order harmonic wavefront and intensity before it is numerically amplified.
Keywords : laser beams numerical analysis optical pumping X-ray lasers
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https://hal-polytechnique.archives-ouvertes.fr/hal-00572608
Contributor : Thuy Le <>
Submitted on : Tuesday, March 1, 2011 - 10:51:07 PM
Last modification on : Wednesday, November 18, 2020 - 7:20:08 PM

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CNRS | X-LOA | X | ENSTA_LOA | PARISTECH | ENSTA | X-DEP-PHYS | UMR8578

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F. Tissandier, Stéphane Sebban, M. Ribiere, Julien Gautier, Philippe Zeitoun, et al.. Bessel spatial profile of a soft x-ray laser beam. Applied Physics Letters, American Institute of Physics, 2010, 97 (23), pp.231106. ⟨10.1063/1.3515841⟩. ⟨hal-00572608⟩

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