论文标题
激烈的两彩色圆两极激光场中AC-Stark-Shift谐振的证据
Evidence of ac-Stark-shifted resonances in intense two-color circularly polarized laser fields
论文作者
论文摘要
我们报告了在暴露于两种反向旋转双子激光场的氢原子的光电子动量分布中，在低能量处的结构的出现。这些结构是由于AC-Stark移动的共振而产生的，它破坏了三倍的对称性，这是$ω-2Ω$ bi circular场的典型代表。我们从直接电离通道和共振途径之间的部分波干扰来讨论这种结构的物理来源，该途径通过了AC型恒定的状态，并展示了基础的Rydberg状态人群如何取决于场的强度和脉冲持续时间。
We report on the appearance of a structure at low energies in the photo-electron momentum distribution of the hydrogen atom exposed to two-color counter-rotating bi-circular laser fields. These structures, which arise due to AC-Stark shifted resonances, break the three-fold symmetry, typical for the $ω-2ω$ bi-circular fields. We discuss the physical origin of this structure in terms of partial-wave interference between direct ionization channels and a resonant pathway, that passes through the AC-Stark shifted state and show how the underlying Rydberg state population depend on the field strength and pulse duration.
