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集成微区成像的激光诱导击穿光谱系统的光谱信号稳定性分析

Spectral Signal Stability of Laser-Induced Breakdown Spectroscopy System Integrated with Micro-Imager

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摘要

搭建了一套集成微区成像的激光诱导击穿光谱系统, 运用描述性统计分析方法分析了激光器的能量稳定性、光谱仪的噪声水平, 重点分析、对比了气体样品和固体样品激光诱导击穿光谱信号的稳定性特征。结果表明:空气样品激光诱导击穿光谱信号具有明显的随机波动特性和正态分布特征, 铝合金样品激光诱导击穿光谱信号具有明显的位置敏感特性和非随机波动特性; 与空气样品相比, 铝合金样品激光诱导击穿光谱信号的不稳定性主要源于光与物质相互作用区域的变化; 对具有正态分布特征的激光诱导击穿光谱信号, 可通过多脉冲平均来有效提高其稳定性。

Abstract

A laser-induced breakdown spectroscopy system integrated with a micro-imager is developed. The energy stability of laser and background noise level of spectrometer are analyzed with the descriptive statistical method. The stability features of laser-induced breakdown spectroscopy signals in gas and solid samples are emphatically analyzed and compared. The results show that the laser-induced breakdown spectroscopy signals of air have the characteristics of random fluctuation and normal distribution. The laser-induced breakdown spectroscopy signals of aluminum alloy have the characteristics of position sensitivity and non-random fluctuation. Compared with that of the air sample, the instability of laser-induced breakdown spectroscopy signal of the aluminum alloy sample is mainly due to the change of the light-matter interaction region. The stability can be effectively improved by multi-pulse averaging for the laser-induced breakdown spectroscopy signals with normal distribution characteristics.

Newport宣传-MKS新实验室计划
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中图分类号:O433.5+4;O531

DOI:10.3788/cjl201946.0311002

所属栏目:光谱学

基金项目:国家自然科学基金(61505223)

收稿日期:2018-09-19

修改稿日期:2018-11-20

网络出版日期:2018-12-04

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王华东:中国科学院安徽光学精密机械研究所光子器件与材料安徽省重点实验室, 安徽 合肥 230031中国科学技术大学, 安徽 合肥 230026
付洪波:中国科学院安徽光学精密机械研究所光子器件与材料安徽省重点实验室, 安徽 合肥 230031
贾军伟:中国科学院安徽光学精密机械研究所光子器件与材料安徽省重点实验室, 安徽 合肥 230031中国科学技术大学, 安徽 合肥 230026
周琪琪:中国科学院安徽光学精密机械研究所光子器件与材料安徽省重点实验室, 安徽 合肥 230031中国科学技术大学, 安徽 合肥 230026
倪志波:中国科学院安徽光学精密机械研究所光子器件与材料安徽省重点实验室, 安徽 合肥 230031
董凤忠:中国科学院安徽光学精密机械研究所光子器件与材料安徽省重点实验室, 安徽 合肥 230031中国科学技术大学, 安徽 合肥 230026

联系人作者:董凤忠(fzdong@aiofm.ac.cn)

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引用该论文

Wang Huadong,Fu Hongbo,Jia Junwei,Zhou Qiqi,Ni Zhibo,Dong Fengzhong. Spectral Signal Stability of Laser-Induced Breakdown Spectroscopy System Integrated with Micro-Imager[J]. Chinese Journal of Lasers, 2019, 46(3): 0311002

王华东,付洪波,贾军伟,周琪琪,倪志波,董凤忠. 集成微区成像的激光诱导击穿光谱系统的光谱信号稳定性分析[J]. 中国激光, 2019, 46(3): 0311002

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