利用数值方法求解一维模型氢原子和类氢离子在强激光场中的含时薛定谔方程,研究了由它们产生的高次谐波谱构造的阿秒脉冲规律.研究结果表明,对于高电荷离子而言,由于高次谐波平台的显著展宽,使得构造的相应阿秒脉冲的宽度大幅度缩短,从而可以得到脉宽低于50阿秒的超短脉冲. The time-dependent Schrödinger equation of hydrogen atoms and hydrogen-like ions in a strong laser field is solved numerically. The regularities of attosecond pulses in the high-order harmonic spectra generated by them are studied. The experimental results show that for highly charged ions In terms of the significant broadening of the higher harmonic platform, the width of the corresponding attosecond pulse of the structure is greatly shortened, so that an ultrashort pulse with a pulse width of less than 50 attoseconds can be obtained.