Elliptical High-Order Harmonic Generation from H+2 in Linearly Polarized Laser Fields
Elliptical High-Order Harmonic Generation from H+2 in Linearly Polarized Laser Fields
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DOI：
10.1088/0256-307x/30/2/023202
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发表时间：
2013-02
影响因子：
3.5
通讯作者：
B. Zhang 张;Z. Zhao 赵
中科院分区：
文献类型：
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作者：
B. Zhang 张;Z. Zhao 赵
通过数值求解三维含时薛定谔方程（TDSE），采用强场近似（SFA）模型，研究了线偏振激光场作用下H+2基态的椭圆高次谐波（HHG）.高度椭圆形HHG产生在中间对准角从TDSE，而标准的SFA模型无法预测这一点。通过引入库仑势和斯塔克位移修正，我们得到了与TDSE定性一致的结果。结果表明，在描述椭圆高次谐波时，库仑势和斯塔克位移都是必要的。
We investigate the elliptical high-order harmonic generation (HHG) from the ground state of H+2 subjected to linearly polarized laser fields, by numerically solving the three-dimensional (3D) time-dependent Schrödinger equation (TDSE) and using the strong-field approximation (SFA) models. Highly elliptical HHG is yielded at intermedial alignment angles from the TDSE, while the standard SFA model fails to predict this. By including the coulomb potential and the stark shift corrections, we yield qualitative agreement results with the TDSE. The comparisons show that in the description of elliptical HHG, both the coulomb potential and the stark-shift are necessary.