Laser-induced breakdown spectroscopy using mid-infrared femtosecond pulses | Zendy

Kyle C. Hartig | Zendy; J. Colgan | Zendy; D. P. Kilcrease | Zendy; J. E. Barefield | Zendy; Igor Jovanovic | Zendy

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Laser-induced breakdown spectroscopy using mid-infrared femtosecond pulses

Author(s) -

Kyle C. Hartig,

J. Colgan,

D. P. Kilcrease,

J. E. Barefield,

Igor Jovanovic

Publication year - 2015

Publication title -

journal of applied physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.699

H-Index - 319

eISSN - 1089-7550

pISSN - 0021-8979

DOI - 10.1063/1.4927624

Subject(s) - femtosecond , laser induced breakdown spectroscopy , laser , infrared , materials science , spectroscopy , wavelength , infrared spectroscopy , plasma , laser ablation , far infrared laser , optics , analytical chemistry (journal) , optoelectronics , chemistry , physics , chromatography , organic chemistry , quantum mechanics

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.

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