Laser-induced breakdown spectroscopy enhanced by a micro torch

L. Liu, X. Huang, S. Li, Yao Lu, K. Chen, L. Jiang, J. F. Silvain, Y. F. Lu

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

A commercial butane micron troch was used to enhance plasma optical emissions in laser-induced breakdown spectroscopy (LIBS). Fast imaging and spectroscopic analyses were used to observe plasma evolution in the atmospheric pressure for LIBS without and with using a micro torch. Optical emission intensities and signal-to-noise ratios (SNRs) as functions of delay time were studied. Enhanced optical emission and SNRs were obtained by using a micro torch. The effects of laser pulse energy on the emission intensities and SNRs were studied. The same spectral intensity could be obtained using micro torch with much lower laser pulse energy. The investigation of SNR evolution with delay time at different laser pulse energies showed that the SNR enhancement factor is higher for plasmas generated by lower laser pulse energies than those generated by higher laser energies. The calibration curves of emission line intensities with elemental concentrations showed that detection sensitivities of Mn I 404.136 nm and V I 437.923 nm were improved by around 3 times. The limits of detection for both Mn I 404.136 nm and V I 437.923 nm are reduced from 425 and 42 ppm to 139 and 20 ppm, respectively, after using the micro torch. The LIBS system with micro torch was demonstrated to be cost-effective, compact, and capable of sensitivity improvement, especially for LIBS system operating with low laser pulse energy.

Original languageEnglish (US)
Pages (from-to)15047-15056
Number of pages10
JournalOptics Express
Volume23
Issue number11
DOIs
StatePublished - Jun 1 2015

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torches
laser-induced breakdown spectroscopy
signal to noise ratios
lasers
light emission
pulses
energy
time lag
butanes
optical communication
atmospheric pressure
costs
augmentation
sensitivity
curves

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Liu, L., Huang, X., Li, S., Lu, Y., Chen, K., Jiang, L., ... Lu, Y. F. (2015). Laser-induced breakdown spectroscopy enhanced by a micro torch. Optics Express, 23(11), 15047-15056. https://doi.org/10.1364/OE.23.015047

Laser-induced breakdown spectroscopy enhanced by a micro torch. / Liu, L.; Huang, X.; Li, S.; Lu, Yao; Chen, K.; Jiang, L.; Silvain, J. F.; Lu, Y. F.

In: Optics Express, Vol. 23, No. 11, 01.06.2015, p. 15047-15056.

Research output: Contribution to journalArticle

Liu, L, Huang, X, Li, S, Lu, Y, Chen, K, Jiang, L, Silvain, JF & Lu, YF 2015, 'Laser-induced breakdown spectroscopy enhanced by a micro torch', Optics Express, vol. 23, no. 11, pp. 15047-15056. https://doi.org/10.1364/OE.23.015047
Liu L, Huang X, Li S, Lu Y, Chen K, Jiang L et al. Laser-induced breakdown spectroscopy enhanced by a micro torch. Optics Express. 2015 Jun 1;23(11):15047-15056. https://doi.org/10.1364/OE.23.015047
Liu, L. ; Huang, X. ; Li, S. ; Lu, Yao ; Chen, K. ; Jiang, L. ; Silvain, J. F. ; Lu, Y. F. / Laser-induced breakdown spectroscopy enhanced by a micro torch. In: Optics Express. 2015 ; Vol. 23, No. 11. pp. 15047-15056.
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