Light-Induced Conical Intersections: Topological Phase, Wave Packet Dynamics, and Molecular Alignment

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• 作者：G谩bor J. Hal谩sz ; Milan 艩indelka ; Nimrod Moiseyev ; Lorenz S. Cederbaum ; 脕gnes Vib贸k
• 刊名：The Journal of Physical Chemistry A
• 出版年：2012
• 出版时间：March 22, 2012
• 年：2012
• 卷：116
• 期：11
• 页码：2636-2643
• 全文大小：1144K
• 年卷期：v.116,no.11(March 22, 2012)
• ISSN：1520-5215

文摘

In previous publications (J. Phys. B: At., Mol. Opt. Phys.2008, 41, 221001; J. Phys. B: At., Mol. Opt. Phys.2011, 44, 045603) a novel and physically interesting phenomenon was found in the field of light鈥搈atter interactions. It was shown theoretically that exposing a molecule to a laser field can give rise to the appearance of so-called light-induced conical intersections (LICIs). The existence of such LICIs may change significantly the field free physical properties of a molecular system. In this article we review the LICIs in diatomics and provide a new insight to the LICI phenomenon. The sodium dimer is chosen as an explicit sample system. We calculated the Berry phase for a contour that surrounds the point of LICI and found it to be 蟺, which is the same value as for the case of a 鈥渘atural鈥?CI in triatomic or larger molecules. We also present results to stress the impact of LICIs on molecular wave packet dynamics and molecular alignment in different electronic states.