期刊
CHEMICAL PHYSICS
卷 405, 期 -, 页码 89-92出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.chemphys.2012.06.011
关键词
Long-lived field-free molecular orientation; Modulated few-cycle THz pulses; Period and phase of the envelope
资金
- National Natural Science Foundation of China [10974024]
- Specialized Research Fund for the Doctoral Program of Higher Education [20090041110025]
- Fundamental Research Funds for the Central Universities
We present a theoretical scheme used for achieving an efficient long-lived field-free molecular orientation by utilizing two modulated few-cycle THz pulses with an appropriate delay time. The exact numerical calculations are performed by solving the time-dependent Schrodinger equation including the vibrational and rotational degrees of freedom, with the LiH molecule as an example. The results show that the orientation degree and the orientation duration are strongly related to the period of envelope T-p, the central frequency omega(L) and the phase of envelope phi of the modulated few-cycle THz pulses. A long-lived and efficient field-free molecular orientation can be realized by adjusting these laser parameters which is available in the current experiment. The effect of temperature on molecular orientation is also discussed. (C) 2012 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据