Laser-induced breakdown spectroscopy using mid-infrared femtosecond pulses
作者： K. C. Hartig , J. Colgan , D. P. Kilcrease , J. E. Barefield , I. Jovanovic
DOI: 10.1063/1.4927624
关键词:
摘要: 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 new measurements at 2.05 μm and traditional 800-nm fs-LIBS. Ablation pulses plasma lower density temperature compared to fs-LIBS performed shorter laser wavelength. LIBS signal-to-background ratio ∼50% greater signal-to-noise ∼40% than near-infrared
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