研究了外加磁场V型三能级原子系统共振相互作用时,对系统产生无反转激光(LWI)的效应和原子系统的稳态特性。在泵浦光场很强、探测光场弱的情况下,共振磁场的加入可导致V型三能级原子系统LWI的产生。该共振磁场诱导出2个上能级间量子相干,并对其它2个不同的跃迁通道产生影响,从而为原子系统产生LWI提供一种新的物理模型。
The interaction of a three-level V-type atom with an additional magnetic field is studied. With one coupling field and one probe field,it is found that,due to the effects of the added magnetic field,lasing without inversion(LWI) can be realized. Here,the magnetic field can induce the quantum coherence between the two upper levels. Also,it can influence the interference of the other transitions.