Abstract
We report on recent progress achieved in x-ray laser research at the Institute of Applied Physics of the University of Bern. Using the existing Nd:glass CPA (chirped-pulse amplification) laser system and the grazing-incidence pumping (GRIP) scheme, saturated x-ray lasing has been obtained on the 4d → 4p, J = 0-1 lines of Sn and Sb at wavelengths of 11.9 and 11.4 nm, respectively, using pumping energies of only 2 J (Sn) and 2.5 J (Sb). The experiments on Sn were done with 2-ps duration pump pulses, while for the Sb experiments the pulse duration was 7 ps. In both cases, multi-microjoule output was measured for a grazing angle of 45° using a grazing-incidence prepulse of the same duration as the main pulse, having 2.8% of its energy, and preceding it by 4.4 ns.
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Balmer, J.E., Grünig, M., Imesch, C., Staub, F. (2009). Recent Progress in Grazing-Incidence-Pumped X-Ray Lasers at Uni-BE. In: Lewis, C.L.S., Riley, D. (eds) X-Ray Lasers 2008. Springer Proceedings in Physics, vol 130. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-9924-3_3
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DOI: https://doi.org/10.1007/978-1-4020-9924-3_3
Publisher Name: Springer, Dordrecht
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Online ISBN: 978-1-4020-9924-3
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