摘要
本文采用激光起伏的Langevinian量子理论和Fokker-Planck方程讨论具有单光子损失机制不服从细致平衡的简并双光子激光(I),获得其统计性质,并与单光子激光(S)和具有双光子损失机制服从细致平衡的简并双光子激光(Ⅱ)相应的结果相比较表明;双光子激光稳态平均光子数比单光子激光高很多,所需泵浦能量也是如此,不过Ⅰ较Ⅱ低,Ⅰ、S和Ⅱ的线宽相差甚远呈递增序。
The degenerate two--photon laser(Ⅰ) with one--photon losses is studied. The systemno longer preserves the property of detailed balance. The statistical properties areobtained and compared with the corresponding ones of the single photon laser(S) andthe degenerate two--photon laser(Ⅱ)with two--photon losses. It is shown that the ave-rage photon numbers in the steady state of Ⅰand Ⅱ are by far higher than that ofS, and are do the inversions for all atoms. However, the inversion of Ⅰis muchlower than that of Ⅱ, and tbe line-widths of Ⅰ, S and Ⅱ remarkably increasesuccessively.
出处
《量子电子学》
CSCD
1991年第3期323-327,共5页
关键词
双光子激光
单光子
损失机制
泵浦
two--photon laser
mechanism for single photon losses
average photon numbers in the steady state
pumping energy
laser linewidth
