All-reflective interferometric autocorrelation is advantageous for the measurement of ultrashort pulses within UV to X-ray region or wideband pulses. By means of numerical simulation

comparison of the signal characteristics between the conventional and the all-reflective interferometric autocorrelations is made for ultrashort pulses with varied spectral phases. Femtosecond pulses from a Ti:sapphire laser as well as the chirped pulses stretched by a 40-mm-thick BK7 glass are measured by a home-made combined interferometric autocorrelator. The results show that the traces of two interferometric autocorrelations are quite similar for the same test pulses. Therefore

in situations that conventional autocorrelation is incapable or inconvenient for pulse measurement

all-reflective interferometric autocorrelation is competent to carry out the duties.