Simultaneous study of the lower order harmonic and photoelectron emission from an atom in intense laser pulse
Simultaneous study of the lower order harmonic and photoelectron emission from an atom in intense laser pulse
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强激光脉冲中原子低次谐波和光电子发射的同步研究
DOI：
10.1088/1674-1056/27/8/083202
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发表时间：
2018
影响因子：
1.7
通讯作者：
Yang Yu Jun
中科院分区：
文献类型：
--
作者：
Yan Yan;Guo Fu Ming;Wang Jun;Chen Ji Gen;Yang Yu Jun
通过求解动量空间中的含时薛定谔方程，同时研究了低次谐波和光电子发射随入射激光强度的变化。结果表明，当激光频率与激光诱导的高激发态与基态之间的跃迁频率不共振时，随着激光强度的增加，低次谐波和光电子的强度逐渐增强。如果发生共振，则低次谐波的强度降低，并且在低次光电子谱中可以观察到干涉。
We simultaneously investigate variations of a low order harmonic and photoelectron emission with an incident laser intensity by solving the time-dependent Schrödinger equation in a momentum space. It can be found that, the intensity of low order harmonic and photoelectron are gradually enhanced with the increase of the laser intensity, when the laser frequency is not in resonance with the transition frequency between the laser-induced high excited states and the ground state. If the resonance occurs, the intensity of the lower order harmonic is reduced and the interference can be observed in the lower order photoelectron spectra.