中国激光, 2019, 46 (6): 0614018, 网络出版: 2019-06-14
熔石英激光诱导损伤的太赫兹检测 
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Terahertz Inspection of Laser-Induced Damage of Fused Silica
图 & 表
图 1. 透射式太赫兹时域光谱系统测试系统图
Fig. 1. Test principle of transmission terahertz time-domain spectral system
图 3. 熔石英在不同激光能量诱导下损伤图。(a) 50 mJ;(b) 60 mJ;(c) 70 mJ;(d) 80 mJ
Fig. 3. Damage images of fused silica induced under different laser energies. (a) 50 mJ; (b) 60 mJ; (c) 70 mJ; (d) 80 mJ
图 4. 样品的测量模型示意图。(a)太赫兹波在空气中传播;(b)太赫兹波透过被测样品
Fig. 4. Schematics of sample test models. (a) Terahertz wave propagates in air; (b) terahertz wave penetrates into the sample
图 5. 测试时域波形。(a)无样品的参考信号;(b)熔石英在不同能量激光诱导下损伤与未损伤区域信号
Fig. 5. Time-domain waveforms when tested. (a) Reference signal without the sample; (b) waveforms of undamaged and damaged areas in fused silica under different laser energies
图 6. 参考信号及熔石英未损伤与不同激光能量诱导损伤区域的频谱振幅图
Fig. 6. Amplitude spectra of reference signal, undamaged area and damaged areas in fused silica under different laser energies
图 7. 熔石英未损伤与不同激光能量诱导下损伤区域的透射谱曲线
Fig. 7. Transmission spectra of undamaged and damaged areas in fused silica under different laser energies
图 8. 熔石英未损伤与不同激光能量诱导下损伤区域的折射率曲线
Fig. 8. Refractive index curves of undamaged and damaged areas in fused silica under different laser energies
表 1参考信号及熔石英损伤与未损伤区域时域信号峰峰值
Table1. Peak-to-peak values of reference signal as well as time-domain waveforms of damaged and undamaged areas in fused silica 10-6arb.units
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施卫, 尚小燕, 苏俊宏, 董陈岗. 熔石英激光诱导损伤的太赫兹检测[J]. 中国激光, 2019, 46(6): 0614018. Wei Shi, Xiaoyan Shang, Junhong Su, Chengang Dong. Terahertz Inspection of Laser-Induced Damage of Fused Silica[J]. Chinese Journal of Lasers, 2019, 46(6): 0614018.
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