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非共振飞秒激光作用下双原子分子准直效应理论研究

发表时间:2008-04-15  浏览量:1833  下载量:709
全部作者: 刘福春,金明星,路秀秀,丁大军
作者单位: 吉林大学原子与分子物理研究所
摘 要: 利用含时Schr錸dinger方程来描述基电子态线性分子体系与激光场的相互作用,通过四阶龙格-库塔方法数值计算对双原子分子在非共振超短脉冲激光场中准直效应进行模拟,给出异核双原子分子ICl在场强为I=1010~1013 W/cm2的非共振飞秒脉冲激光作用下的准直结果。结果表明在飞秒激光作用后ICl分子处于转动相干叠加态,并且周期性的出现准直重建。
关 键 词: 原子分子物理;分子准直;飞秒激光;双原子分子;数值计算
Title: Alignment of diatomic molecule in a nonresonant femtosecond laser field
Author: LIU Fuchun, JIN Mingxing, LU Xiuxiu, DING Dajun
Organization: Institute of Atomic and Molecular Physics, Jilin University
Abstract: A study on alignment of linear diatomic molecules in their electronic ground state is given based on a theoretical description of molecule-laser interaction through time-dependent Schr錸dinger equation. This method is applied to numerically simulate, by four order Runge-Kutta method, the alignment of diatomic molecule ICl in a nonresonant ultrashort laser field within the intensity of I=1010~1013 W/cm2. The results show that, after interacting with the femtosecond laser, a coherent superstition of field-free molecular rotational states occurs and the alignment of molecules is periodically reconstructed.
Key words: atomic and molecular physics; molecular alignment; femtosecond laser; diatomic molecule; numerical calculation
发表期数: 2008年8月第7期
引用格式: 刘福春,金明星,路秀秀,等. 非共振飞秒激光作用下双原子分子准直效应理论研究[J]. 中国科技论文在线精品论文,2008,1(7):735-739.
 
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