Journal of Applied Optics, Volume. 43, Issue 4, 819(2022)
Spectral information of silicon nitride ceramics irradiated by laser
Figures & Tables(9)
Fig. 1. Schematic diagram of experimental device for silicon nitride ceramics irradiated by laser
Fig. 2. Spectrogram of irradiated silicon nitride ceramics with laser energy of 50 mJ~500 mJ
Fig. 3. Spectrogram of irradiated silicon nitride ceramics with laser energy of 500 mJ
Fig. 5. Calculation results of plasma electron temperature at different laser energies
Fig. 6. Calculation results of plasma electron density at different laser energies
Fig. 7. Calculation results of plasma electron oscillation frequencies at different laser energies
Table 1. Physical properties of silicon nitride ceramics
View tableView in ArticleTable 1. Physical properties of silicon nitride ceramics
参数 值 密度/g·cm−3 3.2 烧结温度/℃ 1 700 硬度/HV 1 500～1 800 抗折强度/MPa 700 热膨胀系数(0～1000℃)/℃ 10.5×10−6 热传导率(25～300℃)/W·m·K−1 18
Table 2. Spectral parameters of silicon nitride ceramics irradiated by laser
View tableView in ArticleTable 2. Spectral parameters of silicon nitride ceramics irradiated by laser
原子/离子 波长/nm 跃迁几率· 统计权重/s−1 下能级能量 /eV 上能级能量 /eV 下能级电子组态 上能级电子组态 Si I 288.24 6.51×108 0.780957 5.082345 3s23p2 3s23p4s Si III 324.29 7.05×108 21.73892 25.56257 3s4p 3s5s Si III 396.23 1.82×107 24.99515 28.12213 3s4d 3p4s Si III 437.61 2.07×107 25.39544 28.22687 3s4f 3s5d O I 615.54 6.86×107 10.74093 12.75369 2s22p3(4so)3p 2s22p3(4so)4d N I 821.72 1.84×108 10.33589 11.84447 2s22p2(3p)3s 2s22p2(3p)3p
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Pengcheng CAI, Jia YAN, Peng KONG, Weiguo ZHANG, Lan PANG, Jin XI, Hongxing CAI. Spectral information of silicon nitride ceramics irradiated by laser[J]. Journal of Applied Optics, 2022, 43(4): 819
Paper Information
Category: LASER TECHNOLOGY
Received: May. 28, 2022
Accepted: --
Published Online: Aug. 10, 2022
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