Abstract

The space and time evolution of a laser-induced plasma from a steel target has been studied using optical time-of-flight and shadowgraphic techniques. The results, obtained for two distinct laser energy regimes, allow us to individuate two different regions in the plume, one characterized by air and continuum emissions produced by the shock wave ionization and the other characterized by emissions from ablated material. Moreover, it was shown that a sufficiently high laser fluence and short delay time of acquisition are needed to avoid inhomogeneous effects in the plasma, as required in analytical applications such as laser-induced breakdown spectroscopy.

Enhancement of optical emission from laser-induced plasmas by combined spatial and magnetic confinement

L.B. Guo, W. Hu, B.Y. Zhang, X.N. He, C.M. Li, Y.S. Zhou, Z.X. Cai, X.Y. Zeng, and Y.F. Lu
Opt. Express 19(15) 14067-14075 (2011)

Characteristics of laser-induced steel plasmas generated with different focusing conditions

Fangyuan Liang, Jingge Wang, Xiaoqing Fu, and Hui Wang
Appl. Opt. 62(24) 6350-6357 (2023)

Evolution of uranium monoxide in femtosecond laser-induced uranium plasmas

Kyle C. Hartig, Sivanandan S. Harilal, Mark C. Phillips, Brian E. Brumfield, and Igor Jovanovic
Opt. Express 25(10) 11477-11490 (2017)

Temporally and spatially resolved spectroscopy of laser-induced plasma from a droplet

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Opt. Lett. 13(7) 559-561 (1988)

Radiative model of post-breakdown laser-induced plasma expanding into ambient gas

A. Ya. Kazakov, I. B. Gornushkin, N. Omenetto, B. W. Smith, and J. D. Winefordner
Appl. Opt. 45(12) 2810-2820 (2006)