Abstract Spectral interference and self-absorption seriously affect the accuracy of quantitative analysis in laser-induced breakdown spectroscopy (LIBS). In this work, we used LIBS assisted with laser-stimulated absorption (LSA-LIBS) to solve these problems. Taking nickel (Ni) in the alloy structural steel as an example, the results show that the spectral interference of Ni lines was eliminated, the self-absorption factor of the Ni I 341.47 nm line was reduced by 85%, and the average relative error for determination of Ni element was reduced by 83% using LSA-LIBS. The results indicate that spectral interference and self-absorption can be reduced simultaneously in LSA-LIBS.

中文翻译：

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激光激发吸收辅助的激光诱导击穿光谱中的光谱干扰消除和自吸收减少

摘要 光谱干扰和自吸收严重影响激光诱导击穿光谱（LIBS）定量分析的准确性。在这项工作中，我们使用 LIBS 辅助激光刺激吸收 (LSA-LIBS) 来解决这些问题。以合金结构钢中的镍（Ni）为例，结果表明，消除了Ni谱线的光谱干扰，Ni I 341.47 nm谱线的自吸收因子降低了85%，平均相对误差使用 LSA-LIBS 测定 Ni 元素减少了 83%。结果表明，在 LSA-LIBS 中可以同时减少光谱干扰和自吸收。