Fig. 1. Spectral interference fringes between a transform-limited femtosecond pulse and the chirped pulse

Fig. 2. Spectral interference fringes between a femtosecond pulse and the chirped pulses with different chirp. (a) Pulse widths of chirped pulses are 2, 20 ps; (b) pulse widths of chirped pulses are 0.2, 1 ns

Fig. 3. Distribution of wide fringe central position with time delay difference when femtosecond pulse is transform-limited pulse

Fig. 4. Distribution of wide fringe central position with time delay difference when femtosecond pulse is chirped