A Saturated X-ray Laser Beam at 7 Nanometers

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Science  16 May 1997:
Vol. 276, Issue 5315, pp. 1097-1100
DOI: 10.1126/science.276.5315.1097

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A saturated nickel-like samarium x-ray laser beam at 7 nanometers has been demonstrated with an output energy of 0.3 millijoule in 50-picosecond pulses, demonstrating that saturated operation of a laser at wavelengths shorter than 10 nanometers can be achieved. The narrow divergence, short wavelength, short pulse duration, high efficiency, and high brightness of this samarium laser make it an ideal candidate for many x-ray laser applications.

  • * To whom correspondence should be addressed at Rutherford Appleton Laboratory, Chilton, OX11 0QX, UK. E-mail: j.zhang{at}

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