X rays from microstructured targets heated by femtosecond lasers
- 1 April 1994
- journal article
- Published by Optica Publishing Group in Optics Letters
- Vol. 19 (7) , 484-486
- https://doi.org/10.1364/ol.19.000484
Abstract
We have demonstrated efficient conversion of ultrashort-pulse laser energy to x rays with energies above 1 keV, using laser-produced plasmas generated on a variety of microstructured surfaces. Lithographically produced grating targets generated 0.1 mJ of kilo-electron-volt x rays, and porous gold and aluminum targets emitted 1 mJ. This represents an improvement of a factor of 100 over flat targets. The K-shell emission spectrum of porous aluminum was composed primarily of heliumlike spectral lines.Keywords
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