Single-shot femtosecond laser induced breakdown spectroscopy (LIBS) has been shown to be an effective means of detecting heavy metal dopants in porous thin films. Traditional LIBS analysis of trace dopants in modern painted surfaces or films is difficult due to the broad noisy spectra of the titanium constituent and interference due to the substrate material. Femtosecond laser pulses provide excellent ablation of the target material with little damage to the underlying substrate. In this study a Ti:sapphire femtosecond laser pulse operated at 800 and wavelengths and an nanosecond laser operated at were used to ablate films of doped with varying amounts of MgO. This application shows excellent detection of Mg down to with little interference by the substrate material.
© 2010 Optical Society of AmericaFull Article | PDF Article
Jon Scaffidi, Jack Pender, William Pearman, Scott R. Goode, Bill W. Colston, J. Chance Carter, and S. Michael Angel
Appl. Opt. 42(30) 6099-6106 (2003)
Tao Tong, Jinggao Li, and Jon P. Longtin
Appl. Opt. 43(9) 1971-1980 (2004)
Jon Scaffidi, William Pearman, J. Chance Carter, Bill W. Colston, and S. Michael Angel
Appl. Opt. 43(13) 2786-2791 (2004)