超短强激光场中双原子分子的振动布居转移  

Vibrational Population Transfer of Diatomic Molecules in Intense Ultrashort Laser Pulse Fields

作　　者：丁霞[1] 牛卫国[1] 关立强[1] 王翠[1] 

机构地区：[1]青岛科技大学数理学院,山东青岛266061

出　　处：《青岛科技大学学报（自然科学版）》2012年第1期99-101,共3页Journal of Qingdao University of Science and Technology:Natural Science Edition

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。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.

关 键 词：超短强激光场 振动选择激发 NA2 布居 光诱导势 

分 类 号：O434.14[机械工程—光学工程]