Characterization of a shaped isolated attosecond pulse and retrieval of infrared-laser-related information using high-order-harmonic-generation streaking spectra

An all-optical method for directly reconstructing the spectral phase of an isolated attosecond pulse (IAP) has been proposed recently [New J. Phys. 25, 083003 (2023)]. This method is based on high-harmonic-generation (HHG) streaking spectra generated by an IAP and a time-delayed intense infrared (IR) laser, which can be accurately simulated by an extended quantitative rescattering model. Here, we extend the retrieval algorithm in this method to successfully retrieve the spectral phase of a shaped IAP, which has a spectral minimum, a phase jump about π, and a ``split'' temporal profile. We then reconstruct the carrier-envelope phase of the IR laser from HHG streaking spectra. Finally, we discuss retrieval of the phase of high harmonics by the intense IR laser alone using the Fourier transform of HHG streaking spectra.