Spectral phase extraction from spectral shearing interferogram for structured spectrum of femtosecond optical pulses

We analyze spectral phase extraction from a measured structured spectral shearing interference with both conventional Fourier-transform and wavelet-transform algorithms. Analysis from measured spectral interference shows that the filter used in Fourier technique results in uncertainties in extracted spectral phase; however, the parameters of wavelet-transform unlikely introduce errors in the extracted spectral phase.