期刊论文

Guo Wei

中文

物理学报

1000-3290

2015

64

14

143303-1-143303-7

10.7498/aps.64.143303

National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [11447020]; Natural Science Foundation of Hunan province, ChinaNatural Science Foundation of Hunan Province [2015JJ3104]

本校为第一且通讯机构

利用三态模型和含时波包法,研究了K_2分子在强飞秒抽运-探测激光场中延时、脉宽以及抽运波长对光电子能谱和波包动力学过程的影响.研究结果表明,激光场强较弱或者脉宽较短都可能不发生Autler-Townes分裂,光电子能谱呈现出单峰结构;延时和抽运波长的改变影响能峰结构、位置和相对峰高;对于不同的抽运波长,波包的振动周期是相同的,波包振荡幅度随脉宽增大而减小;光电子能谱反映了波包动力学信息.研究结果可以为实验上实现分子的光控制以及量子调控过程提供一定的参考,并为进一步研究K_2分子的动力学性质提供有用的信息.

We investigate the effect of delay time, pulse width and pump wavelength on photoelectron spectra and wave packet forming process of the three-level K2 molecules via time-dependent wave packet approach. There is no Autler-Townes splitting for weaker pump intensity or shorter pulse width. Delay time and pump wavelength can affect peak structure, position, and relative height. The vibration period of wave packet does not vary with pump wavelength, while the oscillating amplitude decreases with increasing pulse width. Results may provide importan...