Simultaneous study of the lower order harmonic and photoelectron emission from an atom in intense laser pulse<xref rid="cpb_27_8_083202_fn1" ref-type="fn">*</xref> <fn id="cpb_27_8_083202_fn1"> <label>*</label> <p>Project supported by the National Key Research and Development Program of China (Grant No. 2017YFA0403300), the National Natural Science Foundation of China (Grant Nos. 11774129, 11274141, 11627807, 11604119, and 11534004), and the Jilin Provincial Research Foundation for Basic Research, China (Grant No. 20170101153JC).</p> </fn>

Simultaneous study of the lower order harmonic and photoelectron emission from an atom in intense laser pulse* *

Project supported by the National Key Research and Development Program of China (Grant No. 2017YFA0403300), the National Natural Science Foundation of China (Grant Nos. 11774129, 11274141, 11627807, 11604119, and 11534004), and the Jilin Provincial Research Foundation for Basic Research, China (Grant No. 20170101153JC).

Yan Yan^{1, 2}, Guo Fu-Ming^{1, 2}, Wang Jun^{1, 2}, Chen Ji-Gen³, Yang Yu-Jun^{1, 2, †}

(color online) The variation of (a) the photoelectron spectra, (b) the excited states population, and (c) high harmonic spectra with the duration of the incident laser pulse with intensity 1.78 × 10¹⁴ W/cm².