Intense Laser-Atom Physics in Scaled Interactions

该项目的重点是利用远低于原子中电子结合能的频率下强场相互作用的波长标度，对孤立原子与强电磁场的相互作用进行实验研究。使用几个周期的中红外（2微米和4微米）脉冲进行新的电离实验来解决这些标度律是至关重要的，因为它测试了我们对强激光-原子相互作用的所有理解的基础。一些关键的研究将使这一建议，并包括;显着增加的原子系统的数量能够经历强激光场，允许系统的研究单电子和双电子系统，检查强场相互作用的准备状态，启动全球调查的标度律，并允许第一个高灵敏度实验的原子在大有质动力势。利用强场标度律的新研究首次可以解决未回答的问题，测试基本概念，探索新的极限并可能导致新的发现，所有这些都应该增加我们对强激光-原子相互作用的理解。

This project focuses on experimental investigations of the interaction of an isolated atom with an intense electromagnetic field by utilizing the wavelength scaling of the strong field interaction at frequencies much lower than the binding energy of an electron in the atom. Addressing these scaling laws with novel ionization experiments using few-cycle mid-infrared (2 micron and 4 micron) pulses is crucial since it tests the very foundations of all our understanding of the intense laser-atom interaction. A number of key studies will be enabled by this proposal and include; significantly increase the number of atomic systems capable of experiencing intense laser fields, allow systematic studies of one- and two-electron systems, examine strong field interactions for prepared states, initiate a global investigation of scaling laws and permit the first high-sensitivity experiments on atoms in large ponderomotive potentials. For the first time, the proposed novel investigations exploiting strong-field scaling laws can address unanswered questions, test fundamental concepts, explore new limits and potentially result in new discovery, all of which should add to our understanding of the intense laser-atom interaction.