周期排列共振放大介质的小信号增益特性研究  

Small signal gain characteristics of periodically arranged resonant amplifying media

作　　者：陈芳[1] 曾健华[1] 周建英[1] 

机构地区：[1]中山大学光电材料与技术国家重点实验室,广州510275

出　　处：《物理学报》2007年第7期4175-4179,共5页Acta Physica Sinica

基　　金：国家重点基础研究特别项目(批准号:2004CB719805);国家自然科学基金(批准号:10374120)资助的课题.~~

摘　　要：研究一维周期排列共振放大介质的小信号增益特性.研究结果表明小信号增益随着作用长度的增加表现出异常的放大特性.在满足严格布拉格共振条件下,介质折射率分布形成的带隙和增益效应之间的相互竞争决定了透射光场的变化.进一步讨论了增益大小与激子参数和共振原子之间的依赖关系.The characteristics of small signal gain are studied in a one-dimensional periodically arranged amplifying media. It is proved that the small signal gain characteristics shows special features with the increase of gain material length. The variation in gain is determined by the mutual competition between the photonic band gap formed by the refractive index of amplifying media and gain reaction under the resonant Bragg condition. Furthermore, we investigated the gain on the parameters of excitons and resonant atoms.

关 键 词：周期共振放大介质 小信号增益 光子带隙 

分 类 号：TN911[电子电信—通信与信息系统]