Saturated amplification of a collisionally pumped optical-field-ionization soft X-ray laser at 41.8 nm.
We report the first saturated amplification of an optical-field-ionization soft x-ray laser. The amplifying medium is generated by focusing a circularly polarized 330-mJ, 35-fs, 10-Hz Ti:sapphire laser system in a few-mm cell filled with xenon. A gain of 67 cm(-1) on the 4d(9)5p-4d(9)5d transition at 41.8 nm in Pd-like xenon and a gain-length product of 15 have been inferred at saturation. This source delivers about 5 x 10(9) photons per pulse. The influence of the pumping energy and the laser polarization on the lasing output are also presented.
Sebban
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S
Laboratoire d' Optique Appliquée, ENSTA/Ecole Polytechnique, CNRS UMR 7639, Palaiseau, France.
Haroutunian
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Balcou
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Grillon
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Rousse
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Kazamias
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Marin
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Rousseau
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Notebaert
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Pittman
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Chambaret
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Antonetti
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Hulin
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Ros
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Klisnick
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Carillon
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Jaeglé
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Jamelot
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Wyart
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