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双色场中高次谐波转化效率提高的数值研究
Numerical study of the enhancement of efficiency of high-order harmonic generation in two-color laser field
【摘要】 采用渐近边界条件和辛算法数值求解了双色激光场分别与模型Pschl-Teller势和模型He+相互作用的含时Schrdinger方程的无穷空间初值问题,计算了电离概率、电子平均位移、高次谐波与跃迁概率;数值结果显示,添加适当的倍频光的双色激光场使高次谐波转化效率极大提高,并给出定性与定量分析.
【Abstract】 The time-dependent Schrdinger equations(TDSE)of the interaction of two-color laser pulse with Pschl-Teller potential and He+ are solved by using the asymptotic boundary condition and symplectic algorithm.The population of ionization,average distance,high-order harmonic generation(HHG)and population of transition are calculated.The numerical results show that the conversion efficiency of HHG is enhanced in the two-color laser fields,then the qualitative and quantitative analysis for the enhancement of conversion efficiency of HHG are given.
【关键词】 辛算法;
双色激光场;
高次谐波;
定量分析;
【Key words】 symplectic algorithm; two-color laser fields; high-order harmonic generation; quantitative analysis;
【Key words】 symplectic algorithm; two-color laser fields; high-order harmonic generation; quantitative analysis;
【基金】 国家自然科学基金(批准号:10574057,10571074);高等学校博士学科点专项科研基金(批准号:20050183010)资助的课题~~
- 【文献出处】 物理学报 ,Acta Physica Sinica , 编辑部邮箱 ,2009年05期
- 【分类号】O562.3
- 【被引频次】1
- 【下载频次】113