High-order harmonic generation of Li+ with combined infrared and extreme ultraviolet fields Project supported by the National Natural Science Foundation of China (Grant Nos. 11465016, 11664035, 11764038, and 11765018) and the Foundation of Northwest Normal University, China (Grant No. NWNU-LKQN-17-1). |
The temporal profile of the single attosecond pulse generated by superposing directly from 110th to 215th harmonics shown in Fig. |