强单色激光场与分子耦合制备长寿命局域模振动

用半经典方法建立了波包在强单色激光场中的激发和演化的一般模型．通过模拟计算表明，只要局域模振动的跃迁偶极矩远大于与之耦合的背景态的跃迁偶极矩，用强单色激光场可以长时间地选择激发分子的一个局域模振动关键词：

MAKING LOCAL MODE VIBRATION LONG LIVED BY THE INTERACTION BETWEEN A STRONG MONO-COLOR LASER FIELD AND MOLECULES

A general semi-classical model of wave packet excitation and evolution in strong single-color laser field has been set up. The simulating calculation demonstrated that a local mode vibration can be selectively excited by a strong resonant laser field, provided that the transition dipole moment from the ground state to the local mode vibrational state is much larger than those of the background (“bath”) states which are coupled with the local mode state.