Wulin GONG, Zhanfeng LI, Quancheng LIU, Hu DENG, Zhixiang WU. Applications of thickness measurement method based on terahertz time-of-flight in atmospheric environment[J]. Journal of Applied Optics, 2023, 44(4): 809
- Journal of Applied Optics
- Vol. 44, Issue 4, 809 (2023)
Fig. 1. Schematic diagram of measurement principle
Fig. 2. Absorption coefficient and refractive index of water vapor under different humidity
Fig. 3. Comparison diagram of dry air and wet air
Fig. 4. Time-domain spectrogram of samples in atmospheric environment
Fig. 5. Amplitude-frequency diagram of samples
Fig. 6. Time-domain spectrogram of reconstructed signal from samples
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Table 1. Comparison of wave peak position of reconstructed signal
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Table 2. Thickness calculation of signal and reconstructed signal of samples in dry environment
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