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

被引：41

作者：

Li, Jiaming ^{[1
]}

Hao, Zhongqi ^{[1
]}

Zhao, Nan ^{[1
]}

Zhou, Ran ^{[1
]}

Yi, Rongxing ^{[1
]}

Tang, Shisong ^{[1
]}

Guo, Lianbo ^{[1
]}

Li, Xiangyou ^{[1
]}

Zeng, Xiaoyan ^{[1
]}

Lu, Yongfeng ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, WNLO, Wuhan 430074, Hubei, Peoples R China

来源：

OPTICS EXPRESS | 2017年 / 25卷 / 05期

基金：

中国国家自然科学基金;

关键词：

QUANTITATIVE-ANALYSIS; INSTRUMENT; ABSORPTION; PLASMA; COBALT; LEAD; SOIL; AIR;

D O I：

10.1364/OE.25.004945

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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. (C) 2017 Optical Society of America

引用

页码：4945 / 4951

页数：7

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