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Phys Rev Lett. 2002 Dec 16;89(25):253902. Epub 2002 Nov 27.

Highly directive 18.9 nm nickel-like molybdenum x-ray laser operating at 150 mJ pump energy.

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  • 1NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato Wakamiya, Atsugi, Kanagawa 243-0198, Japan.


We experimentally demonstrate that by longitudinally pumping 2 mm long molybdenum preformed plasma with high-intensity 475 fs duration laser pulse, a highly directive soft-x-ray laser at 18.9 nm wavelength is generated. The divergence of the beam is evaluated to be of the submilliradian order, and only requires a pump laser energy of 150 mJ.

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