用时变密度泛函理论研究H_2的高次谐波产生和电离

Journal of Atomic and Molecular Sciences Pub Date : 2017-07-01 DOI:10.4208/JAMS.050617.061617A

Shushan Zhou, Jing Guo, Jigen Chen, Yujun Yang

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摘要

利用时变密度泛函理论(TDDFT)研究了超短强激光中氢分子的电离和高次谐波产生。数值结果表明，与时间依赖薛定谔方程(TDSE)相比，谐波发射的电离概率更高，截止能量更低，这是由TDDFT的电离能较小造成的。HHG的瞬态特性和阿秒脉冲也存在差异

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High-order-harmonic generation and ionization from H_2 by time-dependent density-functional theory

The ionization and high-order harmonic generation (HHG) of a hydrogen molecule in an ultra-short intense laser are investigated by using the time-dependent density functional theory (TDDFT). Our numerical results show, the higher ionization probability and lower cutoff energy of harmonic emission compared with those from the time-dependent Schrodinger equation (TDSE), which is caused by the smaller ionization energy from TDDFT. The disparities of the HHG transient behavior and the attosecond pulse are also

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Journal of Atomic and Molecular Sciences PHYSICS, ATOMIC, MOLECULAR & CHEMICAL-

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