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Time-dependent studies of high-order harmonic generation (Invited Paper)

机译：高阶谐波产生的时变研究（特邀论文）

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Abstract: Experimental results have demonstrated very high order harmonic generation in rare gases exposed to intense laser fields. We use time-dependent methods to calculate the single atom emission spectrum in a number of systems. These spectra show many of the same features seen experimentally, e.g., a broad plateau that, in intensity and extent, depends on the ionization potential. To explain the observed spectra, we fold these single atom results into a full solution of the propagation equations for the nonlinear medium. This leads to impressive agreement between theory and the experiment for xenon, both in the absolute number of photons observed as well as the intensity dependence of all harmonics through the 21st. The use of time-dependent methods also facilitates a comparison between photon and electron emission processes.!21
机译：摘要：实验结果表明，暴露于强激光场的稀有气体中会产生非常高次的谐波。我们使用时间相关的方法来计算许多系统中的单原子发射光谱。这些光谱显示出许多实验观察到的相同特征，例如强度和程度取决于电离电势的宽平台。为了解释观察到的光谱，我们将这些单原子结果折叠为非线性介质传播方程的完整解。这导致氙的理论与实验之间达成了令人印象深刻的共识，无论是观察到的光子绝对数量还是21世纪所有谐波的强度依赖性。使用与时间有关的方法还有助于比较光子和电子发射过程。21

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