飞秒泵浦-探测脉冲下布居转移的场依赖研究（英文）  

Field dependence of population transfer with femtosecond pump-probe pulses

作　　者：郭玮[1,2] 路兴强[1] GUO Wei LU Xingqiang(School of Electrical Engineering, University of South China, Hengyang 421001, China State Key Laboratory of Molecule Reaction Dynamics, Dalian Institute of Chemical Physics Chinese Academy of Sciences, Dalian 116023, China)

机构地区：[1]南华大学电气工程学院,湖南衡阳421001 [2]中国科学院大连化学物理研究所分子反应动力学国家重点实验室,辽宁大连116023

出　　处：《量子电子学报》2017年第5期562-569,共8页Chinese Journal of Quantum Electronics

基　　金：Supported by National Natural Science Foundation of China,11447020;Natural Science Foundation of Hunan Province,2015JJ3104~~

摘　　要：利用含时波包法研究并首次量化了强飞秒泵浦-探测激光场中泵浦场强、泵浦波长和脉宽对三态梯型K_2分子态布居数的影响。泵浦场强、泵浦波长和脉宽影响Rabi振荡,导致电子态布居数的周期性变化。量化场参数对激发态布居数的影响表明变化频率随着泵浦场强和脉宽的增大而变化。结果为实验上实现分子的光控制和进一步研究K_2分子的动力学性质提供了重要参考。The effects of pump intensity, pump wavelength and pulse width on state populations of three-level ladder K2 molecule driven by intense femtosecond pump-probe pulses are investigated and firstly quantified by employing the time-dependent wave packet method. The pump intensity, pump wavelength and pulse width affect Rabi oscillation, which results in the periodical change of the populations of electronic states. The effect of quantization field parameters on population of the excited state shows that the change frequency varies with increasing of pump intensity and pulse width. Results provide an important reference for realizing the molecule optical control in experiment and further study of K2 molecule dynamic properties.

关 键 词：量子光学 布居转移 含时波包法 RABI振荡 

分 类 号：O431.2[机械工程—光学工程]