全文下载:2012010099
丁霞, 牛卫国, 关立强, 王翠
(青岛科技大学 数理学院, 山东 青岛 266061)
摘要: 利用含时量子波包的方法从理论上研究了超短强激光场中双原子Na2分子的选择振动激发。改变激光脉冲的强度可以实现对分子振动激发的选择性控制。在较弱激光强度下,布居被激发到较高振动能级上;增强激光强度,布居则被转移到较低振动能级上。振动布居选择性激发可以用绝热光诱导势能面的概念解释。
关键词: 超短强激光场; 振动选择激发; Na2; 布居; 光诱导势
中图分类号: O 434.14 文献标志码: A
Vibrational Population Transfer of Diatomic Molecules
in Intense Ultrashort Laser Pulse Fields
DING Xia, NIU Wei-guo, GUAN Li-qiang, WANG Cui
(CollegeofMathematicsand Physics,QingdaoUniversityof Science and Technology,Qingdao266061,China)
Abstract: The selective vibrational population transfer of diatomic molecules Na2 in an intense ultrashort laser pulse field is investigated theoretically using the time-dependent quantum wave packet method. By varying the intensity of the driving femtosecond laser pulse, the vibrational population can be selectively transferred. These dynamics are interpreted based on the light-induced potential in adiabatic representation.
Key words: instense ultrashort laser pulse field;selective vibrational population transfer; Na2; population;light-induced potential
收稿日期:2011-05-03
作者简介: 丁霞(1971—),女,讲师.