Laser excitation of angular Rydberg wavepackets
Laser excitation of angular Rydberg wavepackets
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DOI：
10.1088/0953-4075/32/20/314
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发表时间：
1999-10
期刊：
影响因子：
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通讯作者：
H. Nilsen;J. Hansen;S. Selstø;L. Madsen
中科院分区：
文献类型：
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作者：
H. Nilsen;J. Hansen;S. Selstø;L. Madsen
我们考虑激光激发氢中高角动量里德伯态形成的动力学。薛定谔方程通过在球|n,l,m 态下展开波函数来求解。比较通过大量和少量基函数展开所获得的结果，以便识别主要的激励动态。最终总体通过更简单的模型进行研究，并且可以在分析模型中解释长期极限状态下仅奇数角动量的存在。该模型表明，奇数高 l 态的存在源于时间展开算子的对称性，并且偶数 l 态的布居可能会在超短激光脉冲下出现。
We consider the dynamics of the formation of high angular momentum Rydberg states in a hydrogen by laser excitation. The Schrodinger equation is solved by expanding the wavefunction in spherical |n,l,m states. Results obtained by expansions over a large and a small number of basis functions are compared in order to identify the main excitation dynamics. The final population is studied by simpler models and the survival of only odd angular momentum in the long-time limit states can be explained within an analytical model. From this model it is shown that the survival of odd high-l states originates from symmetry properties of the time development operator and that the population of even l states may occur with ultra-short laser pulses.