| 1. | Our results show that the excited states of the atom play an important role in the low - order harmonic spectra and ionization probabilities
研究结果表明，原子的激发态结构对低阶的高次谐波和原子的电离几率有重要影响。 |
| 2. | We calculate high order harmonic generation and ionization probability of one - dimensional atom in intense laser field . our results are in good agreement with those of split - operator method
) dinger方程，研究了一维模型原子在强激光场中的高次谐波和电离几率，其结果与分裂算符方法所得的结果符合得很好。 |
| 3. | We studied the effects of pulse - shape , an additional static electric field and different initial states on ionization probability and hhg . we did so by representing the results of a series of numerical experiments on a one - dimensional model hydrogen atom
本文将采用数值计算法来求解含时schrodinger方程，研究在一维氢原子模型中，外加的平行静电场，不同形状的激光脉冲以及原子处于不同初始态对谐波谱线和电离率的影响。 |
| 4. | It is found that the intensities of high harmonic generation for both cases are similar , but the short - range potential atom does not radiate the low - order harmonic spectra , and the ionization probabilities of the long - range and short - range potential atoms as a function of the laser intensity are obviously different
在强激光场中，长程势原子和短程势原子产生的高次谐波对应的平台和截止位置相同，但是短程势原子没有低阶的高次谐波，而长程势和短程势原子在激光场中的电离几率明显不同。 |
| 5. | Finally , by using split - operator method to solve time - dependent schrodinger equation of two - dimensional atom in intense laser field , we calculate high order harmonic generation and ionization probability of two - dimensional atom in intense laser field and compare our results with those of one - dimensional atom with same binding energy . it i & found that the cutoff position of high order harmonic generation obtained by using these two models are same , but there are great differences in ionization probability
) dinger方程，研究了两维模型原子在强激光场中的高次谐波和电离几率，并与具有相同基态能量的一维模型原子所得的结果进行了比较，结果表明，用这两种模型所得的高次谐波的截止位置相同，但电离几率有很大的差异。 |
| 6. | The series of results showed that there is a close relationship between the ionization probability and the pulse - shape , which in turn affects the hhg . when the pulse is turned on very slowly or rapidly the character of hhg wo n ' t be obvious . only if the turn - on is proper the spectrum of hhg will be ideal
当激光脉冲的时间长度不变时，脉冲开启的快慢会影响到电离率和高次谐波，开启很慢或很快时，谐波的平台结构都不明显；只有在适当的开启下，电离率处于中间值，这时高次谐波谱线才比较理想。 |
| 7. | In chapter four the effects of a static electric field and different initial states on hhg are studied . under an additional electric field the spectrum exhibits a double - plateau structure . furthermore , the ionization probability and hhg also behave differently when the hydrogen atom is in different initial states
在第四章中，我们研究了外加平行静电场以及初态的不同对电离率和高次谐波的影响，发现附加一适当的静电场会使谐波曲线呈现一双平台结构，电离率会随着电场强度的增大而增大；当氢原子在初始时刻处于不同态时，根据选择定则，谐波曲线和电离率都会有较大差别。 |
