Wavelet transform analysis for phase reconstruction of spectral shearing interferometry of ultrashort optical pulses

We introduce the wavelet transform for phase reconstruction of SPIDER in this paper. With the technique, we can directly read the phase from the wavelet transform of spectral interferogram, which essentially eliminates the phase noise resulting from improper temporal filters in the conventional Fourier method. The simulation and the practical example proved the validity and reliability of this technique. This technique will find more applications in generation and characterization of monocycle optical pulses.