强激光脉冲作用下的模型势对谐波发射影响研究

Influence of atomic potential on the generation of high harmonic generation by intense laser pulses

通过数值求解含时薛定谔方程,理论上研究了钾原子的两种不同模型势与强激光场作用下的高次谐波谱,短程模型势原子产生的谐波谱效率低于长程模型势原子.通过对谐波谱的时间频率分析表明短程模型势原子的谐波谱中长轨道发挥重要作用.

We investigate high-order harmonic generation processes by mid-infrared laser pulse using the numerical solution of time-dependent schr？dinger equation for the potassium atom.With the use of two different potential models,the intensity of harmonic spectra from short-range potential atom is lower than the one from the long-ranger potential atom.Through the time-frequency analysis of the harmonic emission spectrum,long orbital plays dominated role for short-range atom.