Spatially selective excitation in laser-induced breakdown spectroscopy combined with laser-induced fluorescence

Jiaming Li, Zhongqi Hao, Nan Zhao, Ran Zhou, Rongxing Yi, Shisong Tang, Lianbo Guo, Xiangyou Li, Xiaoyan Zeng, Yongfeng Lu

Research output: Contribution to journalArticle

19 Scopus citations

Abstract

Spatially selective excitation was proposed to improve excitation efficiency in laser-induced breakdown spectroscopy combined with laser-induced fluorescence (LIBS-LIF). Taking chromium (Cr) and nickel (Ni) elements in steels as examples, it was discovered that the optimal excitation locations were the center of the plasmas for the matrix of the iron (Fe) element but the periphery for Cr and Ni elements. By focusing an excitation laser at the optimal locations, not only excitation efficiency but also the analytical accuracy and sensitivity of quantitative LIBS-LIF were better than those with excitation at the plasma center in conventional LIBS-LIF. This study provides an effective way to improve LIBS-LIF analytical performance.

Original languageEnglish (US)
Pages (from-to)4945-4951
Number of pages7
JournalOptics Express
Volume25
Issue number5
DOIs
Publication statusPublished - Jan 1 2017

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ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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