Investigations of collisionally pumped optical field ionization soft-x-ray lasers

Abstract : We report recent investigations of optical field ionization soft-x-ray lasers. We generated the amplifying medium by focusing a circularly polarized 760-mJ, 30-fs 10-Hz Ti:sapphire laser system into a gas cell a few millimeters long filled with xenon or krypton gas. A gain of 67 cm^−1 on the 4d^95p–4d^95d transition at 41.8 nm in Pd-like xenon and a gain–length product of 15 have been inferred at saturation. This source delivers ∼5×10^9 photons per pulse. More recently we demonstrated lasing at 32.8 nm in Ni-like krypton. The influence of the pumping energy and the laser polarization on the lasing output as well as on the far-field pattern of the x-ray laser beam are reported and discussed.
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Submitted on : Monday, October 4, 2010 - 12:12:45 PM
Last modification on : Wednesday, July 3, 2019 - 10:48:02 AM

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Stéphane Sebban, Lee M. Upcraft, Philippe Balcou, Moana Pittman, Romain Haroutunian, et al.. Investigations of collisionally pumped optical field ionization soft-x-ray lasers. Journal of the Optical Society of America B, Optical Society of America, 2003, 20 (1), pp.195-202. ⟨10.1364/JOSAB.20.000195⟩. ⟨hal-00523047⟩

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