光子学报, 2018, 47 (1): 0114002, 网络出版: 2018-01-30
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
Compact Low-energy High-repetition Rate Laser-induced Breakdown Spectroscopy for Lead Element Detection
光谱学 激光诱导击穿光谱 等离子体 重金属 光谱强度 Spectroscopy Laser-induced breakdown spectroscopy Plasma Heavy metal Spectral intensity
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4 kHz、单脉冲能量为745 μJ、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.
Abstract
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.
冯佳琛, 徐德刚, 王与烨, 张贵忠, 李吉宁, 严德贤, 贺奕焮, 姚建铨. 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[J]. 光子学报, 2018, 47(1): 0114002. FENG Jia-chen, XU De-gang, WANG Yu-ye, ZHANG Gui-zhong, LI Ji-ning, YAN De-xian, HE Yi-xin, YAO Jian-quan. Compact Low-energy High-repetition Rate Laser-induced Breakdown Spectroscopy for Lead Element Detection[J]. ACTA PHOTONICA SINICA, 2018, 47(1): 0114002.
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