Progress in the Correction of Self-Absorption Effect on Laser-Induced Breakdown Spectroscopy

Fan DENG; Zhen-lin HU; Hao-hao CUI; Deng ZHANG; Yun TANG; Zhi-fang ZHAO; Qing-dong ZENG; Lian-bo GUO

doi:10.3964/j.issn.1000-0593(2021)10-2989-10

Spectroscopy and Spectral Analysis, Volume. 41, Issue 10, 2989(2021)

Progress in the Correction of Self-Absorption Effect on Laser-Induced Breakdown Spectroscopy

Fan DENG^1、*, Zhen-lin HU^2、2;, Hao-hao CUI^2、2;, Deng ZHANG^2、2;, Yun TANG^4、4;, Zhi-fang ZHAO^2、2;, Qing-dong ZENG^{2、2; 3; *;}, and Lian-bo GUO^{2、2; *;}

Author Affiliations

¹1. School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China

²2. Wuhan National Laboratory for Optoelectronics, Laser and Terahertz Division, Huazhong University of Science and Technology, Wuhan 430074, China

⁴4. School of Physics and Electronic Science, Hunan University of Science and Technology, Xiangtan 411201, China

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Figures & Tables(8)

Fig. 1. Schematic diagram of self-absorption in LIBS^[10]

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Fig. 2. Effect of self-absorption on emission line shape^[11]

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Fig. 3. Schematic diagram of self-absorption correction of LSA-LIBS^[20]

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Fig. 4. Schematic diagram of MAE-LIBS system^[8]

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Fig. 5. (a): Boltzmann plot (without self-absorption correction); (b): Boltzmann plot (with self-absorption correction)^[7]

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Fig. 6. Flow diagram of IRSAC algorithm^[32]

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Fig. 7. Schematic diagram of reflecting mirror^[37]

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Table 1. The characteristics of various self-absorption correction methods

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Table 1. The characteristics of various self-absorption correction methods

类别	方法	优势	劣势
实验参数	实验参数优化	原理简单易操作	机理研究有待深入
物理辅助装置	共振激发	自吸收效应抑制效果稳定良好	辅助装置价格昂贵每次仅针对单个元素
	微波辅助激发	辅助装置价格便宜同时对多元素实现自吸收抑制	自吸收抑制效果不稳定抑制原理有待更深入的研究
	光纤激光辅助烧蚀	辅助装置价格便宜	自吸收效应抑制效果不够明显抑制原理有待更深入的研究
	正交双脉冲	自吸收效应抑制效果较好	辅助装置成本较高光路较为复杂
量化模型和校正算法	成长曲线法	可定性评估自吸收效应强弱可判断是否存在基体效应	计算过程繁琐需要较多的谱线信息(跃迁参数、等离子体温度、谱线跃迁振子强度)
	自吸收系数法	可直接量化自吸收效应强弱无需谱线跃迁信息计算所需参数较少可对谱线强度和线宽进行校正	需要斯塔克展宽系数(部分元素难以获取) 需要无自吸收谱线作为参考
	基于成长曲线法的自吸收校正算法	扩展了CF-LIBS的应用范围	计算过程繁琐理论较为复杂
	基于内参考线的自吸收校正算法	原理较为简单计算效率高自吸收效应校正效果明显	每个元素必须采集到不存在自吸收效应的谱线
	基于黑体辐射法的自吸收校正算法	原理简单计算效率高无需谱线展宽系数可校正谱线玻尔兹曼图可获得系统光谱收集效率	玻尔兹曼图线性系数提升较小(不超过0.12)
	积分法	可降低基体效应提升定量分析稳定性	计算过程繁琐对于部分元素不适用
	光学薄法	可直接获取光学薄等离子体谱线可避免理论误差	必须采集时间分辨光谱
	反射镜法	辅助装置价格便宜结构简单	计算过程繁琐易受谱线线型影响

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Fan DENG, Zhen-lin HU, Hao-hao CUI, Deng ZHANG, Yun TANG, Zhi-fang ZHAO, Qing-dong ZENG, Lian-bo GUO. Progress in the Correction of Self-Absorption Effect on Laser-Induced Breakdown Spectroscopy[J]. Spectroscopy and Spectral Analysis, 2021, 41(10): 2989

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Paper Information

Category: Research Articles

Received: Sep. 4, 2020

Accepted: --

Published Online: Oct. 29, 2021

The Author Email: DENG Fan (stefandeng@hust.edu.cn)

DOI:10.3964/j.issn.1000-0593(2021)10-2989-10

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology