Rotational dephasing of the molecular alignment by centrifugal distortion [Invited]  

作　　者：Yunxia Huang Guizhen Liu Shuwu Xu 黄云霞;刘桂珍;徐淑武(School of Science,Nantong University,Nantong 226019,China)

机构地区：[1]School of Science,Nantong University,Nantong 226019,China

出　　处：《Chinese Optics Letters》2022年第10期20-24,共5页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.12004199).

摘　　要：The dephasing of molecular alignment can lead to the deformation of the alignment signal during its periodic revivals.Most studies are concentrated on the first few rotational revival periods of the molecular alignment and neglect the dephasing effect.However,study of the alignment dephasing is still of great significance for both the long-term dynamics of the molecular alignment and the dephasing itself.In this work,we theoretically demonstrate that the dephasing effect is correlated with both the rotational temperature and the rotational revival period of the molecules.The results present that the dephasing is especially significant for those molecules with long rotational revival period at high rotational temperatures.The physics behind it is explored by taking advantage of the coherence of the rotational quantum state population.This work deepens our understanding of rotational dynamics and rotational spectroscopy in molecular alignment.

关 键 词：DEPHASING molecular alignment centrifugal distortion rotational state population 

分 类 号：TN24[电子电信—物理电子学] O561[理学—原子与分子物理]