Short pulse pumped X-ray lasers

G.J. Tallents, F. Strati, J.Y. Lin, Ron Smith, S.J. Pestehe, G.J. Pert, Ciaran Lewis, A.G. MacPhee, Caroline Keenan

Research output: Contribution to journalArticle

Abstract

Double laser pulses of duration similar to 75 ps and short laser pulses similar to 1 ps superimposed on longer duration background pulses have been shown to efficiently pump lasing in Ne-like and Ni-like ions. For the 75 ps pumping, X-ray laser output without travelling wave pumping is shown to be well-described by a model of ASE output. With I ps pumping, the X-ray laser output with different velocity travelling wave pumping is well-fitted with an extension to the ASE model allowing for travelling wave excitation of the gain along the plasma line. The model is used to investigate the production of short (<1 ps) x-ray laser pulses and the effects of non-ideal travelling wave velocities on the X-ray laser output. Resonance line spectra of emission perpendicular to the plasma line are measured and simulated. It is shown that an accurate opacity model for the more intense Ne-like ions is needed to correctly simulate the spectra.
Original languageEnglish
Pages (from-to)59-66
Number of pages8
JournalJournal De Physique Iv
Volume11
Issue number2
Publication statusPublished - 2001

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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