首页 | 本学科首页   官方微博 | 高级检索  
     检索      

InGaAs/GaAs量子链的光学特性研究
引用本文:王宝瑞,孙征,徐仲英,孙宝权,姬扬,Z.M.Wang,G.J.Salamo.InGaAs/GaAs量子链的光学特性研究[J].物理学报,2008,57(3):1908-1912.
作者姓名:王宝瑞  孙征  徐仲英  孙宝权  姬扬  Z.M.Wang  G.J.Salamo
作者单位:(1)Department of Physics,University of Arkansas; (2)中科院半导体研究所,超晶格国家重点实验室,北京 100083
基金项目:国家自然科学基金(批准号10334040)和国家重点基础研究发展计划(973)项目(批准号G001CB3095)资助的课题.
摘    要:研究了InGaAs/GaAs量子链的稳态和瞬态光谱特性,特别是载流子的动力学过程.实验发现荧光寿命有很强的探测能量依赖关系,荧光寿命随发光能量的增加而减小;实验还发现,当激发功率较小时,荧光寿命随激发功率增大而增大,当激发功率足够大时,荧光寿命趋于饱和.这些结果清楚地表明,在量子链结构中,参与发光的载流子之间存在明显的耦合和输运现象,进一步分析表明,这种输运主要是由于载流子沿量子链方向的耦合造成的.发光的偏振特性研究进一步证实了载流子沿量子链方向输运过程. 关键词: InGaAs/GaAs 量子点 量子链

关 键 词:InGaAs/GaAs  量子点  量子链
文章编号:1000-3290(2008)03-1908-05
收稿时间:6/7/2007 12:00:00 AM
修稿时间:8/7/2007 12:00:00 AM

Optical properties of InGaAs/GaAs quantum chains
Wang Bao-Rui,Sun Zheng,Xu Zhong-Ying,Sun Bao-Quan,Ji Yang,Z.M.Wang,G.J.Salamo.Optical properties of InGaAs/GaAs quantum chains[J].Acta Physica Sinica,2008,57(3):1908-1912.
Authors:Wang Bao-Rui  Sun Zheng  Xu Zhong-Ying  Sun Bao-Quan  Ji Yang  ZMWang  GJSalamo
Abstract:We have investigated the steady-state and transient optical properties of InGaAs/GaAs quantum chains and found that the photoluminescence (PL) decay time exhibits a strong photon energy dependence. It increases with the decrease of the emission energy. It is also found that the PL decay time increases with the excitation power. When the excitation power is large enough the PL decay time tends to be saturated. All these experimental results show that there is a strong carrier coupling along the chain direction in the quantum dot chain structure. The polarization PL measurements further confirm the carrier transfer process along the chain direction.
Keywords:InGaAs/GaAs  quantum dots  quantum chains
本文献已被 万方数据 等数据库收录!
点击此处可从《物理学报》浏览原始摘要信息
点击此处可从《物理学报》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号