Laser-induced breakdown spectroscopy using mid-infrared femtosecond pulses
Journal Article
·
· Journal of Applied Physics
- Pennsylvania State Univ., University Park, PA (United States). Dept of Mechanical and Nuclear Engineering; Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Pennsylvania State Univ., University Park, PA (United States). Dept of Mechanical and Nuclear Engineering
Here, we report on a laser-induced breakdown spectroscopy (LIBS) experiment driven by mid-infrared (2.05-μm) fs pulses, in which time-resolved emission spectra of copper were studied. Ab-initio modeling is consistent with the results of new fs measurements at 2.05 μm and traditional 800-nm fs-LIBS. Ablation by mid-infrared fs pulses results in a plasma with a lower plasma density and temperature compared to fs-LIBS performed at shorter laser wavelength. LIBS driven by mid-infrared fs pulses results in a signal-to-background ratio ~50% greater and a signal-to-noise ratio ~40% lower than fs-LIBS at near-infrared laser wavelength.
- Research Organization:
- Univ. of Michigan, Ann Arbor, MI (United States); Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA); US Department of Homeland Security (DHS); USDOE Laboratory Directed Research and Development (LDRD) Program
- Contributing Organization:
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
- Grant/Contract Number:
- NA0002534; DN-130-NF0001; 89233218CNA000001; 2012.05 DN-130-NF0001
- OSTI ID:
- 1367664
- Alternate ID(s):
- OSTI ID: 1526944
- Report Number(s):
- LA-UR-15-21651
- Journal Information:
- Journal of Applied Physics, Vol. 118, Issue 4; ISSN 0021-8979
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 11 works
Citation information provided by
Web of Science
Web of Science
Plasma emission characteristics in laser-induced breakdown spectroscopy of silicon with mid-infrared, multi-millijoule, nanosecond laser pulses from a Ho:YLF excitation source
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journal | January 2019 |
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