Spectral characteristics of laser induced breakdown spectroscopy based on cylindrical focusing lens

FU Xiaoqing; WANG Jingge; DAI Bo; LIANG Fangyuan; LIU Jiaxin

doi:10.3969/j.issn.1007-5461.2024.04.002

Chinese Journal of Quantum Electronics, Volume. 41, Issue 4, 578(2024)

Spectral characteristics of laser induced breakdown spectroscopy based on cylindrical focusing lens

FU Xiaoqing1,*... WANG Jingge1, DAI Bo1, LIANG Fangyuan1 and LIU Jiaxin2 |Show fewer author(s)

Author Affiliations

¹School of Physics and Engineering, Henan University of Science and Technology, Luoyang 471023, China

²No.5715 Factory, People's Liberation Army, Luoyang 471000, China

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Figures & Tables(10)

Fig. 1. Schematic of the experimental setup

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Fig. 2. Topography of laser ablation craters generated by spherical lens focusing (a) and cylindrical lens focusing (b)

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Fig. 3. Comparison of characteristic emission spectra between cylindrical lens and spherical lens LIBS of alloy steel samples

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Fig. 4. Variation of spectral line intensity and relative standard deviation (RSD) with the number of ablation. (a) Signal intensity of Mn I: 403.08 nm; (b) Signal intensity of Mn II: 259.37 nm; (c) Background intensity of Mn I: 403.08 nm;(d) Background intensity of Mn II: 259.37 nm

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Fig. 5. Boltzmann plots under spherical lens focusing and cylindrical lens focusing (a) and stability comparison of plasma temperature (b)

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Fig. 6. Lorentz fitting of Fe I atomic spectral lines under spherical lens focusing and cylindrical lens focusing (a) and stability comparison of the corresponding electron density (b)

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Fig. 7. Calibation plots obtained for Mn (a), Cr (b) and Ni (c) elements in alloy steel

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Table 1. Standard mass content percentage of Mn, Cr and Ni in alloy steel samples
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Table 1. Standard mass content percentage of Mn, Cr and Ni in alloy steel samples
Sample Mn / % Cr / % Ni / %
1# 0.503 2.46 1.76
2# 0.243 0.86 4.40
3# 0.93 1.43 0.108
4# 1.33 0.278 2.66
5# 2.1 1.83 1.03
6# 1.32 3.16 0.35

Table 2. Spectroscopic parameters of Fe I used in temperature calculation by Boltzmann plot
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Table 2. Spectroscopic parameters of Fe I used in temperature calculation by Boltzmann plot
Wavelength/nm A_ki/ (10⁷s^-1) E_k/eV g_k
306.72 3.12 4.955 7
344.06 1.71 3.603 7
355.49 14.00 6.319 13
360.67 8.29 6.129 13
361.88 7.22 4.415 7
385.99 0.97 3.210 9

Table 3. Comparison of $C_{L O D}$ between spherical lens focus and cylindrical lens focus LIBS for different elements

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Table 3. Comparison of $C_{L O D}$ between spherical lens focus and cylindrical lens focus LIBS for different elements

Species

$σ_{B}$ $\times$ 10^-3

(spherical)

$σ_{B} \times$ 10^-3

(cylindrical)

$C_{L O D} \times$ 10^-2

(spherical)

$C_{L O D} \times$ 10^-2

(cylindrical)

C_{L O D}

(spherical) /

C_{L O D}

(cylindrical)

3.90

1.30

6.18

1.54

4.01

8.50

4.10

8.04

3.57

2.25

8.30

4.30

27.3

12.7

2.15

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Xiaoqing FU, Jingge WANG, Bo DAI, Fangyuan LIANG, Jiaxin LIU. Spectral characteristics of laser induced breakdown spectroscopy based on cylindrical focusing lens[J]. Chinese Journal of Quantum Electronics, 2024, 41(4): 578

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Paper Information

Category:

Received: May. 23, 2023

Accepted: --

Published Online: Jan. 8, 2025

The Author Email: FU Xiaoqing (fuxq16124x@126.com)

DOI:10.3969/j.issn.1007-5461.2024.04.002

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Standard mass content percentage of Mn, Cr and Ni in alloy steel samples

Table 1. Standard mass content percentage of Mn, Cr and Ni in alloy steel samples

Table 2. Spectroscopic parameters of Fe I used in temperature calculation by Boltzmann plot

Table 2. Spectroscopic parameters of Fe I used in temperature calculation by Boltzmann plot

Table 3. Comparison of CLOD between spherical lens focus and cylindrical lens focus LIBS for different elements

Table 3. Comparison of CLOD between spherical lens focus and cylindrical lens focus LIBS for different elements

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Table 3. Comparison of $C_{L O D}$ between spherical lens focus and cylindrical lens focus LIBS for different elements

Table 3. Comparison of $C_{L O D}$ between spherical lens focus and cylindrical lens focus LIBS for different elements