Intrapulse dynamical effects in multiphoton processes: Theoretical analysis
Intrapulse dynamical effects in multiphoton processes: Theoretical analysis
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DOI：
10.1021/jp973097t
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发表时间：
1998-06-04
影响因子：
2.9
通讯作者：
Wilson, KR
中科院分区：
文献类型：
--
作者：
Cao, JS;Che, JW;Wilson, KR
建立了稳态和非稳态多能级模型来分析超快多光子过程，重点研究了近共振中间态的电子和核相干性。通过识别和表征三个脉冲内动力学机制（顺序共振，啁啾跟随，和时间延迟），一个清晰的物理图像，了解微妙的啁啾依赖于脉冲内泵浦探测过程。本文的理论分析不仅为最近的三光子实验提供了一种可能的解释，而且为研究原子和分子中的超快多光子过程提供了一个一般的理论框架。
Stationary and nonstationary multilevel models are formulated to analyze ultrafast multiphoton processes with emphasis on electronic and nuclear coherence of a near-resonant intermediate state. By identifying and characterizing three intrapulse dynamical mechanisms (sequential-resonance, chirp-following, and time-delay), a clear physical picture is developed for understanding the subtle chirp dependence in intrapulse pump-probe processes. The theoretical analysis in the paper provides not only a possible interpretation for a recent three-photon experiment but also a general theoretical framework for studying ultrafast multiphoton processes in atoms and molecules.