中国激光, 2021, 48 (1): 0111001, 网络出版: 2021-01-13 复制并引用该论文  本文已被引 6 次  被引通知

图 & 表

图 1. 飞秒LIBS实验装置示意图

Fig. 1. Experimental setup of femtosecond LIBS

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图 2. 圆偏振和线偏振下Zn (I)和Cu (I)的时间积分光谱(激光能量为1.5mJ)。(a)圆偏振下Zn (I)的时间积分光谱;(b)线偏振下Zn (I)的时间积分光谱;(c)圆偏振下Cu (I)的时间积分光谱;(d)线偏振下Cu (I)的时间积分光谱

Fig. 2. Time-integrated spectra of Zn (I) and Cu (I) lines with circular and linear polarizations (laser energy is 1.5mJ). (a) Time-integrated spectrum of Zn (I) line with circular polarization; (b) time-integrated spectrum of Zn (I) line with linear polarization; (c) time-integrated spectrum of Cu (I) line with circular polarization; (d) time-integrated spectrum of Cu (I) line with linear polarization

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图 3. 圆偏振和线偏振下Cu (I)的时间分辨光谱(激光能量为1.5mJ)。(a)圆偏振;(b)线偏振

Fig. 3. Time-resolved spectra of Cu (I) lines with circular and linear polarizations (laser energy is 1.5mJ). (a) Circular polarization; (b) linear polarization

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图 4. 圆偏振和线偏振下Cu (I) 510.55nm和Zn (I) 472.21nm的峰值强度随着延迟时间的变化(激光能量为1.5mJ)

Fig. 4. Evolution of peak intensities of Cu (I) 510.55nm and Zn (I) 472.21nm lines with delay time under circular and linear polarizations (laser energy is 1.5mJ)

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图 5. 典型的Boltzmann图。(a)圆偏振,延迟时间为0.4μs;(b)圆偏振,延迟时间为0.5μs

Fig. 5. Typical Boltzmann plots. (a) Circular polarization, delay time of 0.4μs; (b) circular polarization, delay time of 0.5μs

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图 6. Cu(I) 510.55 nm 谱线的Stark展宽轮廓。(a)圆偏振,延迟时间为0.4μs;(b)圆偏振,延迟时间为0.5μs

Fig. 6. Stark broadening frofile of Cu(I) 510.55 nm spectral line. (a) Circular polarization, delay time of 0.4μs; (b) circular polarization, delay time of 0.5μs

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图 7. 圆偏振和线偏振下电子温度和电子密度随着延迟时间的变化(激光能量为1.5mJ)。(a)电子温度;(b)电子密度

Fig. 7. Evolution of electron temperature and density with delay time under circular and linear polarizations(laser energy is 1.5mJ). (a) Electron temperature; (b) electron density

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表 1Cu (I)光谱线对应的相关参数值

Table1. Spectral parameters of Cu (I)

Line Wavelength /nm Transition Akigk Ek /eV Cu (I) 510.55 3d104p(2P3/2) - 3d94s2(2D5/2) 8.0×106 3.82 Cu (I) 515.32 3d104d(2D3/2) - 3d104p(2P1/2) 2.4×108 6.19 Cu (I) 521.82 3d104d(2D5/2) - 3d104p(2P3/2) 4.5×108 6.19

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于丹, 孙艳, 冯志书, 代玉银, 王秋云, 陈安民, 金明星. 通过圆偏振光提高飞秒激光诱导击穿光谱的发射强度[J]. 中国激光, 2021, 48(1): 0111001. Dan Yu, Yan Sun, Zhishu Feng, Yuyin Dai, Qiuyun Wang, Anmin Chen, Mingxing Jin. Improving Emission Intensity of Femtosecond Laser-Induced Breakdown Spectroscopy by Using Circular Polarization[J]. Chinese Journal of Lasers, 2021, 48(1): 0111001.