Interference Effect of Direct Photodetachment for H? Ions in a Short Laser Pulse
CHEN Jian-Hong1,2, ZHAO Song-Feng1, LI Xiao-Yong1, ZHOU Xiao-Xin1**
1College of Physics and Electronic Engineering, and Key Laboratory of Atomic and Molecular Physics and Functional Materials of Gansu Province, Northwest Normal University, Lanzhou 730070 2Department of Physics, Lanzhou City University, Lanzhou 730070
Abstract：The electron detachment of negative hydrogen ions exposed to a few-cycle linearly polarized laser pulse is investigated in the context of the strong field approximation evaluated by the saddle-point method. The results show that the angular distributions of the laser-induced photoelectron obtained by the saddle-point method are in good agreement with both the experimental results and the numerical-integration results. More importantly, we show that the unusual maximum in the angular distributions of photoelectrons for negative hydrogen ions can be explained by the quantum interference effect based on the saddle-point method.
(Strong-field excitation of optical transitions in quantum systems; multiphoton processes; dynamic Stark shift)
引用本文:
. [J]. 中国物理快报, 2012, 29(9): 93201-093201.
CHEN Jian-Hong, ZHAO Song-Feng, LI Xiao-Yong, ZHOU Xiao-Xin. Interference Effect of Direct Photodetachment for H? Ions in a Short Laser Pulse. Chin. Phys. Lett., 2012, 29(9): 93201-093201.
2012, Vol. 29 
