激光诱导Cu等离子体发射光谱分析  

Emission Spectrum Analysis of Copper Plasma Induced by Laser

作　　者：桑涛[1,2] 郝晓剑[1,2] 

机构地区：[1]中北大学电子测试技术国家重点实验室,太原030051 [2]中北大学仪器科学与动态测试教育部重点实验室,太原030051

出　　处：《光电技术应用》2015年第6期14-17,共4页Electro-Optic Technology Application

摘　　要：利用Nd:YAG脉冲激光器,在空气环境下作用于金属材料Cu,分别获得了119.1、154.6、201.7、256.2 m J?Pulse^(-1)四种不同能量下的等离子体特征谱线,选取CuΙ510.5 nm和521.8 nm两条谱线作为研究对象,分析了谱线强度与能量变化之间的关系,发现其展宽线型分别为Lorenz线型和Gauss线型。结果表明,对于Cu等离子体发射光谱,不同波段所对应谱线的展宽机制不同,随着激光能量的增大,谱线的强度逐渐增大,谱线的半宽高也随着激光能量的增加有所增大。By using of Nd：YAG pulse laser, spectral lines of copper are experimentally studied in air atmo-sphere. The plasma characteristic spectral line of copper is obtained by 119.1, 154.6, 201.7 and 256.2 m J·Pulse^（-1） energy. Cu I 510.5 nm and 521.8 nm are selected as the research object. The relationship between spectral line in-tensity and laser energy is analyzed and it is found that the broadening line is Lorenz and Gauss respectively. Theresults show that different bands correspond to different spectral broadening mechanism for Cu plasma emissionspectrum and with the increasement of laser energy, the spectral line intensity is increased gradually, and the fullwidth at half maximum（FWHM） of the spectral lines also increased.

关 键 词：等离子体发射光谱 特征谱线 谱线展宽 

分 类 号：O433.4[机械工程—光学工程]