Spatially resolved soft x-ray spectroscopy of femtosecond-laser-induced plasmas

Yasuaki Okano; Katsuya Oguri; Tadashi Nishikawa; Hidetoshi Nakano

doi:10.1117/12.588451

21 March 2005 Spatially resolved soft x-ray spectroscopy of femtosecond-laser-induced plasmas

Yasuaki Okano, Katsuya Oguri, Tadashi Nishikawa, Hidetoshi Nakano

Proceedings Volume 5714, Commercial and Biomedical Applications of Ultrafast Lasers V; (2005) https://doi.org/10.1117/12.588451
Event: Lasers and Applications in Science and Engineering, 2005, San Jose, California, United States

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.

Citation Download Citation

Yasuaki Okano, Katsuya Oguri, Tadashi Nishikawa, and Hidetoshi Nakano "Spatially resolved soft x-ray spectroscopy of femtosecond-laser-induced plasmas", Proc. SPIE 5714, Commercial and Biomedical Applications of Ultrafast Lasers V, (21 March 2005); https://doi.org/10.1117/12.588451

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