中国激光, 2019, 46 (3): 0311004, 网络出版: 2019-05-09
光束整形对激光诱导击穿光谱稳定性的改善 下载: 1221次
Improvement of Beam Shape Modification on Stability of Laser Induced Breakdown Spectroscopy
图 & 表
图 2. 光束的轮廓和强度分布。(a)高斯激光的轮廓;(b)高斯激光的强度分布;(c)平顶激光的轮廓;(d)平顶激光的强度分布
Fig. 2. Beam profiles and intensity distributions. (a) Beam profile of Gaussian laser; (b) intensity of Gaussian laser; (c) beam profile of flattop laser; (d) intensity of flattop laser
图 3. 紫铜样品经1000个激光脉冲烧蚀后的烧蚀坑形貌。(a)~(b)高斯激光;(c)~(d)平顶激光
Fig. 3. Ablation crater morphology of copper sample after 1000 laser pulses. (a)-(b) Gaussian laser; (c)-(d) flattop laser
图 4. 高斯激光和平顶激光的1000个激光脉冲的能量变化
Fig. 4. Laser energy of 1000 laser pulse for Gaussian laser and flattop laser
图 5. 高斯激光和平顶激光下铜元素谱线强度随脉冲次数的变化。(a) Cu 324.84 nm;(b) Cu 327.53 nm;(c) Cu 515.29 nm;(d) Cu 521.83 nm
Fig. 5. Change of Cu element spectra line intensity with pulse number at Gaussian laser and flattop laser. (a) Cu 324.84 nm; (b) Cu 327.53 nm; (c) Cu 515.29 nm; (d) Cu 521.83 nm
表 1所选用的铜原子谱线参数
Table1. Parameters of selected Cu atomic spectral lines
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贾军伟, 付洪波, 王华东, 周琪琪, 倪志波, 董凤忠. 光束整形对激光诱导击穿光谱稳定性的改善[J]. 中国激光, 2019, 46(3): 0311004. Junwei Jia, Hongbo Fu, Huadong Wang, Qiqi Zhou, Zhibo Ni, Fengzhong Dong. Improvement of Beam Shape Modification on Stability of Laser Induced Breakdown Spectroscopy[J]. Chinese Journal of Lasers, 2019, 46(3): 0311004.