Ultra-simplified design and quantitative analysis for the optical system of compact laser-induced breakdown spectroscopy  

作　　者：Jiujiang YAN Ke LIU Jinxiu MA Yang LI Kailong LI Hongwei WEI 闫久江;刘可;马金秀;李阳;李开龙;韦宏玮(College of Electrical Engineering,Naval University of Engineering,Wuhan 430033,People’s Republic of China;Academy of Electronic Engineering,Naval University of Engineering,Wuhan 430033,People’s Republic of China)

机构地区：[1]College of Electrical Engineering,Naval University of Engineering,Wuhan 430033,People’s Republic of China [2]Academy of Electronic Engineering,Naval University of Engineering,Wuhan 430033,People’s Republic of China

出　　处：《Plasma Science and Technology》2025年第3期87-93,共7页等离子体科学和技术(英文版)

基　　金：financially supported by National Natural Science Foundation of China (Nos.62305392 and 62305123);Independent Research and Development Project of Naval Engineering University (No.2023504050);the Nursery Plan Project of Navel University of Engineering (2022)。

摘　　要：Optimization and simplification of optical systems represent a milestone in advancing the development of handheld and portable laser-induced breakdown spectroscopy(LIBS)systems towards smaller,more integrated forms.This research,for the first time,conducted a comprehensive optimization design and comparative analysis of three compact LIBS system optical paths:the paraxial optical path(OP),the off-axis OP,and the reflective OP.The differences in spectral intensity and stability among these paths were revealed,providing a scientific basis for selecting the optimal OP for LIBS systems.The research found that the paraxial OP excels in spectral performance and quantitative analysis accuracy,making it the preferred choice for compact LIBS systems.Specifically,the paraxial OP significantly enhances spectral intensity,achieving a 6 times improvement over the off-axis OP and an even more remarkable 150 times increase compared to the reflective OP,greatly enhancing detection sensitivity.Additionally,the relative standard deviation,spectral stability index,maintains a consistently low level,ranging from 10.9%to 13.4%,significantly outperforming the other two OPs and ensuring the reliability of analytical results.In the field of quantitative analysis,the paraxial OP also demonstrates higher accuracy,precision,and sensitivity,comparing to other OPs.The quantitative analysis models for Si,Cu,and Ti elements exhibit excellent fitting,providing users with high-quality quantitative analysis results that are of great significance for applications in material science,environmental monitoring,industrial inspection,and other fields.In summary,this study not only confirms the enormous application potential of the paraxial OP in compact LIBS systems but also provides valuable practical experience and theoretical support for the miniaturization and integration of LIBS systems.Looking ahead,with continuous technological advancements,the design of the paraxial OP is expected to further propel the widespread adoption of LIBS technology in

关 键 词：compact LIBS optical path design spectral stability quantitative analysis 

分 类 号：TN2[电子电信—物理电子学]