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Saturated x-ray lasers at 196 and 73 Å pumped by a picosecond traveling-wave excitation

King, R.E., Pert, G.J., McCabe, S.P., Simms, P.A., MacPhee, A.G., Lewis, C.L.S., Keenan, R., O’Rourke, R.M.N., Tallents, G.J., Pestehe, S.J., Strati, F., Neely, D. and Allott, R. (2001) Saturated x-ray lasers at 196 and 73 Å pumped by a picosecond traveling-wave excitation. Physical Review A, 64 (5). 053810-12 pages. ISSN 1094-1622

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Traveling-wave irradiation with a laser pulse of duration ∼1 picosecond has been shown to achieve saturated operation of Ne- and Ni-like x-ray lasers. Gain at 196 Å was confirmed by observation of both forward and backward x-ray laser beams from a germanium plasma under ideal and nonideal traveling-wave conditions at a small signal gain of >40 cm-1. Saturation was observed for targets >4 mm long consistent with a model of laser amplification along the plasma medium and with the output of a detailed ray-tracing post-processor coupled to a hydrodynamic and atomic physics code. Ni-like samarium targets, pumped under ideal traveling-wave conditions exhibited a small signal gain of ∼19 cm-1 at 73 Å with saturation observed for targets 8 mm long.

Item Type: Article
Institution: The University of York
Academic Units: The University of York > Physics (York)
Depositing User: York RAE Import
Date Deposited: 09 Feb 2009 14:30
Last Modified: 09 Feb 2009 14:30
Published Version: http://dx.doi.org/10.1103/PhysRevA.64.053810
Status: Published
Publisher: The American Physical Society.
Identification Number: 10.1103/PhysRevA.64.053810
URI: http://eprints.whiterose.ac.uk/id/eprint/7683

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