Optimization toward a high-average-brightness soft-x-ray laser pumped at grazing incidence

Kevin Cassou (1) , Sophie Kazamias (1) , D. Ros (1) , Fabien Ple (1) , Gérard Jamelot (1) , Annie Klisnick (1) , O. Lundh (2) , F. Lindau (2) , A. Persson (2) , C.G Wahlstrom (2) , Sébastien de Rossi (3) , Denis Joyeux (3) , B. Zielbauer (4) , D. Ursescu (4) , T. Kuhl (4)

1 LIXAM - Laboratoire d'interaction du rayonnement X avec la matière
2 Department of Physics
3 Laboratoire Charles Fabry de l'Institut d'Optique / Scop
4 GSI - Helmholtz zentrum für Schwerionenforschung GmbH

We report the near-field imaging characterization of a 10 Hz Ni-like 18.9 nm molybdenum soft-x-ray laser pumped in a grazing incidence pumping (GRIP) geometry with a table-top laser driver. We investigate the effect of varying the GRIP angle on the spatial behavior of the soft-x-ray laser source. After multiparameter optimization, we were able to find conditions to generate routinely a high-repetition-rate soft-x-ray laser with an energy level of up to 3 μJ/pulse and to 6×1017 photons/s/mm2/mrad2/(0.1% bandwidth) average brightness and 1×1028 photons/s/mm2/mrad2/(0.1% bandwidth) peak brightness.

Domaines: Optique [physics.optics]

Kevin Cassou, Sophie Kazamias, D. Ros, Fabien Ple, Gérard Jamelot, et al.. Optimization toward a high-average-brightness soft-x-ray laser pumped at grazing incidence. Optics Letters, 2007, 32 (2), pp.139-141. ⟨hal-00558023⟩