光学精密工程2025，Vol.33Issue(19)：3032-3042,11.DOI:10.37188/OPE.20253319.3032
高重频光纤激光诱导击穿光谱对TC4钛合金的免定标分析
Calibration-free analysis of TC4 titanium alloy using high-repetition-rate fiber laser-induced breakdown spectroscopy
摘要
Abstract
Traditional laser-induced breakdown spectroscopy(LIBS)employing low-repetition-rate solid-state lasers exhibits insufficient stability during extended continuous operation.Although fiber-laser-in-duced breakdown spectroscopy(FL-LIBS)offers superior long-term stability,its high repetition rate pos-es challenges for conventional quantitative approaches,which typically rely on time-integrated spectra and calibration with reference samples.To remove dependence on reference standards,a high-speed,high-rep-etition-frequency triggered-gating system was implemented on an FL-LIBS platform to capture transient plasma spectra.A calibration-free quantitative analysis algorithm was developed,and the Internal Refer-ence Self-absorption Correction(IRSAC)method was improved to compensate for spectral self-absorp-tion,thereby enhancing the accuracy of calibration-free quantification.Experimental results for TC4 titani-um alloy indicate total analysis distance errors(DE)ranging from 0.883%to 3.928%(mass fraction),corresponding to reductions of 16.879%to 26.597%(mass fraction)relative to uncorrected self-absorp-tion.These findings demonstrate that high-accuracy calibration-free quantitative analysis can be achieved under high-repetition-frequency fiber laser ablation,offering a viable approach for LIBS systems that re-quire prolonged continuous operation.关键词
激光诱导击穿光谱/光纤激光器/定量分析/自吸收效应/自由定标法Key words
laser induced breakdown spectroscopy/fiber laser/quantitative analysis/self-absorption ef-fect/calibration-free method分类
化学引用本文复制引用
朱方印,林锐涛,王斌,蒋二龙,赵楠,周稳稳,郑少锋,李嘉铭,张庆茂..高重频光纤激光诱导击穿光谱对TC4钛合金的免定标分析[J].光学精密工程,2025,33(19):3032-3042,11.基金项目
国家自然科学基金资助项目(No.62475075) （No.62475075）
广东省省级科技计划项目(No.2023A1111120030,No.2023A1515011641) （No.2023A1111120030,No.2023A1515011641）
广东省重点领域研发计划资助项目(No.2023B0909030003) （No.2023B0909030003）
广东省口岸安全智能化检测重点实验室开放课题(No.2023B1212010011) （No.2023B1212010011）
佛山国创院"揭榜挂帅"科技攻关项目(No.JB-GS2024001) （No.JB-GS2024001）
