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