Abstract
Spectral analysis of laser-induced plasmas for surface ablation has demonstrated the possibility of analyte signal enhancement with dual-pulse configurations as compared with traditional single-pulse LIBS. Using an orthogonal dual-pulse arrangement, measurements were performed using glass microscope slides to allow both spectral analysis as well as optical transmission measurements. Order of magnitude enhancements in Mg and Si atomic emission signal peak intensities were recorded along with similar enhancements of the continuum emission for dual-pulse LIBS as compared to single-pulse. Peak-to-base measurements showed a roughly 50% increase, while signal-to-noise ratios were enhanced by a factor of 2-3. Temporal analysis of the measured transmitted laser pulse waveforms showed no significant differences between dual-pulse and single-pulse LIBS configurations, providing additional insight into the possible laser coupling processes for the dual-pulse configuration.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 968-974 |
| Number of pages | 7 |
| Journal | Spectrochimica Acta - Part B Atomic Spectroscopy |
| Volume | 60 |
| Issue number | 7-8 |
| DOIs | |
| State | Published - Aug 31 2005 |
| Externally published | Yes |
| Event | Laser Induced Plasma Spectroscopy and Applications (LIBS 2004) Third International Conference LIBS Malaga - Malaga, Spain Duration: Sep 28 2005 → Oct 1 2005 |
Keywords
- Breakdown
- Dual-pulse
- LIBS
- Plasma
ASJC Scopus subject areas
- Analytical Chemistry
- Atomic and Molecular Physics, and Optics
- Instrumentation
- Spectroscopy