Liangze Pan, Cheng Liu, Jianqiang Zhu. Online Measurement Algorithm of Nanosecond Pulses Based on Temporal Shearing[J]. Chinese Journal of Lasers, 2021, 48(24): 2404004
- Chinese Journal of Lasers
- Vol. 48, Issue 24, 2404004 (2021)
Fig. 1. Principle of nanosecond pulse measurement algorithm based on self-referencing time-domain shearing
Fig. 2. Flow chart of the amplitude reconstruction algorithm
Fig. 3. Reconstruction results of four types of nanosecond pulse amplitudes. (a) Time-domain shearing interferogram; (b) original time intensity and reconstructed time intensity
Fig. 4. Robustness of the amplitude reconstruction algorithm to noise. (a) Variation curve of amplitude reconstruction error with SNR of shearing interferogram; (b) reconstruction result when SNR is 10 dB; (c) reconstruction result when SNR is 20 dB; (d) reconstruction result when SNR is 40 dB
Fig. 5. Influence of different parameters on the reconstruction algorithm. (a) Relative time delay; (b) relative intensity; (c) spectral response ratio of photodetector
Fig. 6. Experimental results of the amplitude reconstruction algorithm. (a) Time-domain shearing interferogram recorded by experiment; (b) reconstructed time intensity distribution and the time intensity distribution recorded by the oscilloscope
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