一种小型化的低能量、高重频激光诱导击穿光谱系统用于铅元素分析（英文）  

Compact Low-energy High-repetition Rate Laser-induced Breakdown Spectroscopy for Lead Element Detection

作　　者：冯佳琛 徐德刚[1] 王与烨[1] 张贵忠[1] 李吉宁 严德贤 贺奕焮 姚建铨[1] 

机构地区：[1]天津大学光电信息技术重点实验室(教育部),精密仪器与光电子工程学院激光与光电子学研究所,天津300072

出　　处：《光子学报》2018年第1期119-125,共7页Acta Photonica Sinica

基　　金：Tianjin Municipal Science and Technology Commission ( No. 13ZCZDSF02300)

摘　　要：研制了一款小型化的激光诱导击穿光谱系统.光源采用低能量、高重频的二极管泵浦固体Nd:YAG激光器,分析了激光重频和激光能量对光谱信号的影响.激光器工作在重频4kHz、单脉冲能量为745μJ、脉宽为17ns时,得到了7条铅元素的特征谱线.与单脉冲激光诱导击穿光谱系统相比,不仅特征谱线数量增加,光谱的信噪比也提高了73%。简化的系统设置和低的激光能量使得激光诱导击穿光谱技术能够应用于更多领域.A compact laser-induced breakdown spectroscopy using a low-energy, high-repetition rate Nd：YAG DPSS laser as excitation source has been developed. The influences of laser repetition rate and laser power on LIBS signal were analyzed. When the laser operated at 4 kHz, pulse energy of 745 μJ and pulse width of 17 ns, the seven emission lines of Lead （Pb） was obtained. Compared with the traditional single pulse LIBS, the number of emission lines is increase, also the signal-to-noise ratio is improved by almost 73%. Based on simplified setup and low energy, high-repetition rate laser-induced breakdown spectroscopy will be applied in more emerging fields.

关 键 词：光谱学 激光诱导击穿光谱 等离子体 重金属 光谱强度 

分 类 号：O657.38[理学—分析化学] E933.43[理学—化学]