超短光脉冲作用下的二能级原子

TWO-LEVEL ATOMS AFFECTED BY ULTRASHORT OPTIC PULSE

考虑到光场的振幅随时间分布的影响时,我们重新研究了光场与二能级原子相互作用的跃迁几率问题。在强光信号作用下,经过一定的数学代换后,上能级几率的求解可归结为类希尔方程求解;在弱光信号作用下,利用转动波近似(RWA),给出了二能级原子跃迁几率的解析表达式,并讨论了几种典型脉冲光场的分布。

Considering the effect of distribution of amplitude vs time t, we reconsider the problem of transition of a two-level atoms which interacts with optic field. In a high-intensity optics field, using rotating waves approximation (RWA) and the special transform, the problem of two-level atoms transition attributes to the Hill equation. In a weak optic field, we can get an analysic expression of the high level probability, further mort, we discuss several typical optic pulse field.