Single-pinhole diffraction of few-cycle isolated attosecond pulses with a two-color field

Wang Shaoyi¹, Han Dan¹, Dong Kegong¹, Wu Yuchi^{1, 2, †,}, Tan Fang¹, Zhu Bin¹, Fan Quanping¹, Cao Leifeng¹, Gu Yuqiu^{1, 2}

(a) Dependence of the harmonic orders on the ionization time (blue asterisk) and recombination time (red dash), and the gray filled curve is the tunnel ionization calculated by the ADK model. (b) High-order harmonic generation in the two-color (blue) and one-color fields (red), corresponding to the time–frequency analysis (c) and (d).