里德堡钾原子在超高斯脉冲激光场中的量子跃迁

Quantum Transfer in Rydberg Potassium Atom under Ultra-Gaussian Laser Pulses

用含时多态展开方法,计算了超高斯脉冲激光场中里德堡钾原子两个Stark态21 s与19 f之间的量子跃迁情况.结果表明这两个Stark态之间的跃迁几率与超高斯激光场的初始振幅、脉冲形状参数m和脉冲半宽度有关;在m等于3和m等于4时,当激光场初始振幅和半宽度取合适值时,可以实现这两个Stark态之间布居数的较大跃迁,并实现终态囚禁.

By using the time-dependent multilevel approach in this paper, we have studied population transfer in Rydberg potassium atom between its two Stark states of 21s and 19f under ultra-Gaussian laser pulses. The result shows that the population transfer of two Stark states is about with initial amplitude E0, pulses shape parameterandm and pulse half width tr. Under the ultra-Gaussian laser pulses of m= 3 and m= 4, when laser pulses initial amplitude E0 and pulse half width tr is becoming to value, the population can be efficiently transferred from 21s to 19f and trapped there at the same time .