Effect of spontaneously generated coherence on transient evolution of LWI gain in an open Ladder type system

被引：6

作者：

Yang Yan-Ling ^{[1
]}

Wang Lei ^{[1
]}

Liu Zhong-Bo ^{[1
]}

Lu Hong-Wu ^{[2
]}

Fan Xi-Jun ^{[1
]}

机构：

[1] Shandong Normal Univ, Coll Phys & Elect, Jinan 250014, Peoples R China

[2] Shandong Normal Univ, Commun Coll, Jinan 250014, Peoples R China

来源：

ACTA PHYSICA SINICA | 2009年 / 58卷 / 05期

基金：

中国国家自然科学基金;

关键词：

open system; spontaneously generated coherence; transient evolution; gain without inversion; V-TYPE; INVERSION; ABSORPTION;

D O I：

10.7498/aps.58.3161

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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.

引用

页码：3161 / 3165

页数：5

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