用谱拟合法计算强激光场中氢原子的高次谐波谱

1.中国科学院武汉物理与数学研究所核磁共振与原子分子物理国家重点实验室,湖北,武汉,430072

2.中国科学院武汉物理与数学研究所核磁共振与原子分子物理国家重点实验室,湖北,武汉,430072

基金项目: 国家自然科学基金

A New Spectral Fitting Method and Its Application to High Order Harmonic Generation Spectra of Hydrogen in Intense Laser Field

介绍了一种新的求解含时薛定谔方程的谱拟合法. 该方法把含时波函数在少量且分布稀疏的网格点上拟合, 结合泰勒级数展开, 用相对简单的计算得到包括Δt高次项贡献的含时波函数. 并将这一方法用于强激光场中氢原子高次谐波谱的计算, 得到了与其它方法一致的结果.

[1]	Potvliege R M,Shakeshaft R.Time-independent Theory of Multiphoton Ionization of an Atom by an Intense Field[J].Phys Rev,1998,A38:4 597.
[2]	Potvliege R M,Shakeshaft R.Multiphoton Processes in an Intense Laser Field:Harmonic generation and total ionization rates for atomic hydrogen[J].Phys Rev,1999,A40:3 061.
[3]	Kulander K C,Sandhya K R,Koonin S E.Time-dependent Hartree-Fock Theory of Charge Exchange:Application to He2++He[J].Phys Rev,1982,A25:2 968.
[4]	Fritsh W ,Lin C D.The Semi-classical Close-coupling Description of Atomic Collisions:Recent developments and results[J].Phys Rep,1991,202:1.
[5]	Zhou X,Lin C D.Linear-least-squares Fitting Method for the Solution of the Time-dependent Schrdinger Equation:Applications to atoms in intense laser fields[J].Phys Rev,2000,A61:053411.
[6]	Wang J,Chu S I,Laughlin C.Multiphoton Detachment of H-:II Intensity-dependent photodetachment rates and thresholf behavior-complex-scaling generalized pseudospectral method[J].Phys Rev,1994 ,A50:3 208.
[7]	Canuto C,Hussaini M Y,Quarteroni A,et al.Spectral Methods in Fluid Dynamics[M].Berlin:Springer,1988.
[8]	Corkum P B.Plasma Perspective on Strong Field Multiphoton Ionization[J] Phys Rev Lett,1993,71:1 994.

上一张下一张

计量

作者相关

文章评分