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Proceedings Paper

Spatially resolved soft x-ray spectroscopy of femtosecond-laser-induced plasmas
Author(s): Yasuaki Okano; Katsuya Oguri; Tadashi Nishikawa; Hidetoshi Nakano
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Paper Abstract

Time-integrated spatially resolved emission spectra of soft x-rays were obtained in the case of 100-fs-laser irradiation of tantalum and aluminum targets by controlling the time intervals between the main pulse and artificial pre-pulse. The intensities of the main pulse and pre-pulse were fixed to 1.3x1016 and 2.0x1014 W/cm2. X-ray intensities were enhanced more than several ten fold at the optimal pulse-separation time of 2 ns. We confirmed that the main emission area for each target was less than 50-μm long from the target surface. In contrast to the small size of main emission area, we observed that line emissions from the aluminum target expanded far from the target.

Paper Details

Date Published: 21 March 2005
PDF: 8 pages
Proc. SPIE 5714, Commercial and Biomedical Applications of Ultrafast Lasers V, (21 March 2005); doi: 10.1117/12.588451
Show Author Affiliations
Yasuaki Okano, NTT Corp. (Japan)
Katsuya Oguri, NTT Corp. (Japan)
Tadashi Nishikawa, NTT Corp. (Japan)
Hidetoshi Nakano, NTT Corp. (Japan)


Published in SPIE Proceedings Vol. 5714:
Commercial and Biomedical Applications of Ultrafast Lasers V
Joseph Neev; Christopher B. Schaffer; Andreas Ostendorf; Stefan Nolte, Editor(s)

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