Demonstration of X-Ray Amplifiers near the Carbon K Edge

B. J. MacGowan, S. Maxon, L. B. Da Silva, D. J. Fields, C. J. Keane, Dennis L Matthews, A. L. Osterheld, J. H. Scofield, G. Shimkaveg, G. F. Stone

Research output: Contribution to journalArticlepeer-review

128 Scopus citations


The Ni-like 4d-4p laser scheme has been extended to wavelengths near the K absorption edge of carbon. A gain of 2.3 cm-1 with a duration of 250 psec was observed in Ni-like Ta at 44.83 Å (a wavelength close to optimal for holographic imaging of live cells). Ni-like W produced a gain of 2.6 cm-1 with a total of 7 gainlengths of amplification at 43.18 Å. This is the first demonstration of an x-ray amplifier on the short-wavelength side of the carbon K edge, within the "water window." Both lasers should be scalable to coherent power sufficient for holographic imaging and other applications.

Original languageEnglish (US)
Pages (from-to)420-423
Number of pages4
JournalPhysical Review Letters
Issue number4
StatePublished - 1990
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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