Nanosecond and femtosecond laser pulses were combined in an orthogonal preablation spark dual-pulse laser-induced breakdown spectroscopy (LIBS) configuration. Even without full optimization of interpulse alignment, ablation focus, large signal, signal-to-noise ratio, and signal-to-background ratio enhancements were observed for both copper and aluminum targets. Despite the preliminary nature of this study, these results have significant implications in the attempt to explain the sources of dual-pulse LIBS enhancements.
© 2003 Optical Society of America
(140.3440) Lasers and laser optics : Laser-induced breakdown
Original Manuscript: February 20, 2003
Revised Manuscript: July 8, 2003
Published: October 20, 2003
Jon Scaffidi, Jack Pender, William Pearman, Scott R. Goode, Bill W. Colston, J. Chance Carter, and S. Michael Angel, "Dual-pulse laser-induced breakdown spectroscopy with combinations of femtosecond and nanosecond laser pulses," Appl. Opt. 42, 6099-6106 (2003)