Demonstration of a soft x-ray amplifier

Dennis L Matthews, P. L. Hagelstein, M. D. Rosen, M. J. Eckart, N. M. Ceglio, A. U. Hazi, H. Medecki, B. J. MacGowan, J. E. Trebes, B. L. Whitten, E. M. Campbell, C. W. Hatcher, A. M. Hawryluk, R. L. Kauffman, L. D. Pleasance, G. Rambach, J. H. Scofield, G. Stone, T. A. Weaver

Research output: Contribution to journalArticlepeer-review

970 Scopus citations


We report observations of amplified spontaneous emission at soft x-ray wavelengths. An optical laser ionized thin foils of selenium to produce a population inversion of the 2p53p and 2p53s levels of the neonlike ion. Using three time-resolved, spectroscopic measurements we demonstrated gain-length products up to 6.5 and gain coefficients of 5.5±1.0 cm-1 for the J=2 to 1 lines at 206.3 and 209.6. We also observed considerable amplification for the same transitions in yttrium at 155.0 and 157.1.

Original languageEnglish (US)
Pages (from-to)110-113
Number of pages4
JournalPhysical Review Letters
Issue number2
StatePublished - 1985
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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