论文标题
涡流束与旋转分子之间的相互作用与旋转
Interaction between vortex beams and diatomic molecules with rotation
论文作者
论文摘要
近年来，涡流束（VB）与分子之间的相互作用引起了很多关注，但是缺乏理论方法以某种方式限制了其进一步的分析，尤其是当涉及分子旋转自由度并与分子电子状态相结合时。为了将分子旋转纳入理论研究，在本文中，我们以球形谐波扩展的形式描述了hund的耦合基础上的双原子分子状态，并表达相互作用的相互作用，然后研究由VB驱动的分子状态的旋转过渡。该理论清楚地表明，Vb的每个光子可能具有0，$ \ hbar $或2 $ \ hbar $的总角动量，因此可以使用一些特定的选择规则来驱动硅藻分子旋转过渡的O，P，P，Q，R和S分支。这些结果表明，VB可以提供准备和测量双原子分子状态的新方法。
The interaction between vortex beam (VB) and molecule has drawn much attention in recent years, but the lack of theoretical method somehow limits its further analysis, especially when the molecular rotational degree of freedom is involved and coupled with the molecular electronic states. To incorporate the molecular rotation into the theoretical study, in this paper, we describe the diatomic molecular states in Hund's coupling basis and express interaction Hamiltonian in form of spherical harmonics expansion, and then investigate the rotational transition of molecular states driven by VB. The theory clearly illustrates that each photon of VB may carry a total angular momentum of 0, $\hbar$, or 2$\hbar$, and therefore could drive O, P, Q, R and S branches of diatomic molecular rotational transitions with some specific selection rules. These results indicate that VB could provide new methods for preparing and measuring the diatomic molecular states.
