Open AccessEffect of spontaneously generated coherence on transient evolution of LWI gain in an open Ladder type system
Author(s) -
Yuexiang Yang,
Lei Wang,
Zhongbo Liu,
Hongwu Lu,
Fan Xi-Jun
Publication year - 2009
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.58.3161
Subject(s) - coherence (philosophical gambling strategy) , physics , transient (computer programming) , rate equation , density matrix , mechanics , optics , quantum mechanics , computer science , kinetics , operating system , quantum
The effect of spontaneously generated coherence SGC on transient evolution of gain of lasing without inversion LWI and modulation roles of the injection rate ratio and exit rate on SGC-dependent gain in an open Ladder type three level system are studied by using the numerical solution of the density matrix motion equation of the system. It was shown that: variation of SGC strength will make the transient and final stationary gains having a considerable changing; when incoherent pumping presents, LWI gain increases with the ratio of injection rates and exit rate decreasing, however, when incoherent pumping is absent, the case is just the opposite; by choosing suitable values of SGC strength, the injection rate ratio and exit rate, we can obtain the largest transient and final stationary gain.