Quantum path control and isolated attosecond pulse generation in the combination of near-infrared and terahertz pulses*
Zhong Hui-Ying, Guo Jing†, Zhang Hong-Dan, Du Hui, Liu Xue-Shen‡
       
Time–frequency distribution of the HHG ((a1), (a2)) and corresponding three-step models ((b1), (b2)) in a 800-nm fundamental laser field only and a 800-nm fundamental laser field combined with a THz field, respectively.