强圆极化laser脉冲电离取向羰基硫分子
Ionization of oriented carbonyl-sulfide molecules by intense circularly polarized laser pulses
摘要：
我们提出了结合实验和理论的结果取向羰基硫化物分子的强场电离的圆偏振激光脉冲。得到的分子框架光电子角分布显示出明显的不对称垂直于分子电偶极矩的方向。这些发现解释了隧道模型调用的激光诱导斯塔克位移与分子的偶极子和极化率及其非弛豫阳离子。本文的重点是理解一维取向极性分子的强场电离，特别是光电子发射方向的不对称性。在下面的文章（Phys.Rev.A83，023406（2011））中，重点是理解来自三维取向的不对称顶部分子的强场电离，特别是分子轨道的节平面中的电子发射的抑制。
英文摘要：
We present combined experimental and theoretical results on strong-field ionization of oriented carbonyl-sulphide molecules by circularly-polarized laser pulses. The obtained molecular frame photoelectron angular distributions show pronounced asymmetries perpendicular to the direction of the molecular electric dipole moment. These findings are explained by a tunneling model invoking the laser-induced Stark shifts associated with the dipoles and polarizabilities of the molecule and its unrelaxed cation. The focus of the present article is to understand the strong-field ionization of one-dimensionally-oriented polar molecules, in particular asymmetries in the emission direction of the photoelectrons. In the following article (Phys. Rev. A 83, 023406 (2011)) the focus is to understand strong-field ionization from three-dimensionally-oriented asymmetric top molecules, in particular the suppression of electron emission in nodal planes of molecular orbitals.
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