M. V. Frolov https://orcid.org/0000-0001-6651-4619
N. L. Manakov https://orcid.org/0000-0001-6134-7276
A. A. Silaev https://orcid.org/0000-0001-9905-0064
N. V. Vvedenskii https://orcid.org/0000-0002-2870-3141
Date of this Version
PHYSICAL REVIEW A 101, 013402 (2020)
An all-optical method to retrieve the temporal intensity profile of an extreme ultraviolet (XUV) attosecond pulse is proposed based on XUV-assisted high-order harmonic generation (HHG) by an intense infrared (IR) pulse. For a harmonic located on the XUV-induced high-energy plateau (beyond the IR HHG plateau), the measured harmonic yield as a function of the time delay between the XUV and IR pulses is shown to accurately map the temporal intensity profile of the XUV pulse. Single-color and two-color orthogonal, linearly polarized IR pulses are used to demonstrate the method.