摘要
本文通过求解一维含时薛定谔方程,比较研究了H2+和HD+分子离子体系的高次谐波发射效率.数值计算结果表明,在相同激光条件下,不对称分子体系能产生更高强度的谐波谱.此外,借助时频分布,电离几率和电子-核波包密度概率分布图,对计算结果做出了合理的解释.
The yields of the molecular high-order harmonics generation is studied by numerically solving the one-dimensional (1D) time-dependent Schr?dinger equation (TDSE) when the model H2^+/HD^+ ions are exposed to an intense laser pulse. To explain the effect more clearly, not only the ionization probabilities but also the electron-nuclear probability density distributions and time-frequency profiles are calculated. The results show that more intense harmonics are generated in the asymmetric diatomic molecule ion HD^+ than that of H2^+ ion.
出处
《原子与分子物理学报》
CAS
CSCD
北大核心
2014年第3期431-435,共5页
Journal of Atomic and Molecular Physics
基金
国家自然科学基金(11047191)
教育部科技研究重点项目(211025)
教育部高等学校博士学科点专项科研基金(新教师类)(20111404120004)
山西省青年科技研究基金(2009021005)
关键词
高次谐波谱
效率
不对称分子
High-order harmonic spectrum
Yields: Asymmetric molecule