Quantum path control using attosecond pulse trains via UV-assisted resonance enhance ionization*
Li Fang†, Wei Lai, He Zhi-Cong
       
(a) The harmonic spectrum calculated with the APT centered at 19 ω 0 (green line). (b) The corresponding attosecond pulses centered at different frequencies by superposing the harmonics (green line) in panel (a). Here, the time delay is chosen as ω 0 τ = 0.5 π . Other laser parameters are the same as those in Fig.  3 . For comparison, the harmonic spectrum in Fig.  3(e) is also presented as the blue line in panel (a).