原子在激光场中产生高次谐波研究  

作　　者：曾婷婷 

机构地区：[1]银川能源学院基础课教学部,银川750105

出　　处：《科技创新与应用》2025年第5期121-124,共4页Technology Innovation and Application

基　　金：银川能源学院科学技术研究项目资助(2022-KY-Y-18)。

摘　　要：通过对一维含时薛定谔方程的数值求解,研究激光场强度和中心波长不同时对原子电离过程的影响,进一步研究激光场强度和激光场波长改变的情况下,产生的高次谐波谱。通过研究发现高次谐波的转换效率和截止位置会随激光场波长和强度的改变而变化。通过控制场强和波长2个变量的关系可以提高高次谐波谱的转换效率,同时扩展高次谐波谱的截止位置,从而得到高强度连续性好的高次谐波谱。By numerically solving the one-dimensional time-dependent Schr?魻?觟dinger equation,the influence of different laser field intensity and central wavelength on the atomic ionization process is studied,and the higher-order harmonic spectrum generated when the laser field intensity and laser field wavelength change is further studied.Through research,it is found that the conversion efficiency and cutoff position of higher harmonics will change with the wavelength and intensity of the laser field.By controlling the relationship between the two variables of field strength and wavelength,the conversion efficiency of the high-order harmonic spectrum can be improved,and the cut-off position of the high-order harmonic spectrum can be expanded at the same time,so that a high-order harmonic spectrum with good continuity can be obtained.

关 键 词：转换效率 中心波长 高次谐波 截止位置 激光场 

分 类 号：O56[理学—原子与分子物理]