Fig. 1. Process of establishing non-square trace map. (a) Frog trace of square SHG configuration; (b) trace generated by reducing sampling bandwidth of trace frequency axis; (c) trace generated by reducing sampling times of trace delay axis; (d) trace generated by increasing sampling frequency of trace frequency axis

Fig. 2. Reconstruction of analog pulses with non-square trace. (a) FROG trace of square SHG configuration; (b) FROG trace of non-square SHG configuration of 168×14 size; (c)--(d) amplitude distribution and phase distribution of Fig. (a) and Fig. (b); (e) FROG trace of square PG configuration; (f) FROG trace of non-square PG configuration of 168×12 size; (g)--(h) amplitude distribution and phase distribution of Fig. (e) and Fig. (f); (i) FROG trace of square XPM configuration; (j) FROG trace of non-square XPM configuration of 168×8 size; (k)--(l) amplitude distribution and phase distribution of Fig. (i) and Fig. (j)

Fig. 3. Reconstruction of aperiodic scale experimental pulses from non-square traces. (a) FROG trace of square SHG configuration; (b) FROG trace of non-square SHG configuration of 168×14 size; (c)--(d) amplitude distribution and phase distribution of Fig. (a) and Fig. (b); (e) FROG trace of square PG configuration; (f) FROG trace of non-square PG configuration of 168×12 size; (g)--(h) amplitude distribution and phase distribution of Fig. (e) and Fig. (f); (i) FROG trace of square XPM configuration; (j) FROG trace of non-square XPM configuration of 168× 8 size; (k)--(l) amplitude distribution and phase distribution of Fig. (i) and Fig. (j)