Temporally and spectrally resolved imaging of laser-induced plasmas.
We report a hybrid imaging technique capable of performing measurements of the spatial, temporal, and spectral emission characteristics of laser-induced plasmas by use of a single detection system. We apply this technique to study the plasma produced by laser ablation of LiNbO3 and observe phenomena not seen in such detail with standard instruments. These include extreme line broadening up to a few nanometers accompanied by self-absorption near the target surface, and expansion dynamics that differ strongly between the different species. Overall, the wealth of quantitative information provided by this novel technique sheds new light on processes occurring during plasma expansion.
Siegel
J
J
Laser Processing Group, Instituto de Optica, Consejo Superior de Investigaciones Cientificas, Serrano 121, 28006 Madrid, Spain. j.siegel@io.cfmac.csic.es
Epurescu
G
G
Perea
A
A
Gordillo-Vázquez
F J
FJ
Gonzalo
J
J
Afonso
C N
CN