论文标题
用原子摩肌光谱解剖强场激发动力学
Dissecting strong-field excitation dynamics with atomic-momentum spectroscopy
论文作者
论文摘要
对内部量子动力学的观察依赖于观察到的系统与测量设备之间的相关性。我们建议使用原子和分子自由度的质量中心（C.M.）作为“内置”监测装置，以观察其在非扰动激光场中的内部动力学。我们在最简单的模型系统上说明了这个想法 - 强烈，重点的红外激光束中的氢原子。为此，我们对内部和c.m之间的相关性开发了可削减数值的量子力学处理。动力学。我们表明，横向动量记录了激发态的时间体验该领域，从而可以重建强场激发过程。基态成为弱场寻求，这是克莱默斯·亨内伯格政权的明确且长期以来一直在寻求的签名。
Observation of internal quantum dynamics relies on correlations between the system being observed and the measurement apparatus. We propose using the center-of-mass (c.m.) degrees of freedom of atoms and molecules as a "built-in" monitoring device for observing their internal dynamics in non-perturbative laser fields. We illustrate the idea on the simplest model system - the hydrogen atom in an intense, tightly-focused infrared laser beam. To this end, we develop a numerically-tractable, quantum-mechanical treatment of correlations between internal and c.m. dynamics. We show that the transverse momentum records the time excited states experience the field, allowing femtosecond reconstruction of the strong-field excitation process. The ground state becomes weak-field seeking, an unambiguous and long sought-for signature of the Kramers-Henneberger regime.
