量子点超辐射发光管研究进展  

Research Progress of Quantum Dot Superluminescent Diodes

作　　者：吕雪芹[1] 王佐才[1] 金鹏[1] 王占国[1] 

机构地区：[1]中国科学院半导体研究所半导体材料科学重点实验室,北京100083

出　　处：《微纳电子技术》2009年第8期449-456,共8页Micronanoelectronic Technology

基　　金：国家重点基础研究发展计划(2006CB604904);国家自然科学基金(60876086;60776037)

摘　　要：简要回顾了超辐射发光管(SLD)的发展历史、量子点SLD的提出及优点,介绍了SLD的工作原理、器件结构及表征参数,详细分析了近年来国内外各研究小组在提高量子点SLD性能方面的研究进展。基于自组织量子点的尺寸非均匀分布特征、优化的有源区结构设计以及高的光学质量,量子点SLD目前的研究水平已远远超过量子阱SLD。例如,量子点SLD的输出光谱宽度可达到150nm以上,输出功率可达到百mW量级。简要介绍了SLD在光纤陀螺仪、光学相干断层成像术、光纤通信、宽带外腔可调谐激光器等方面的应用,讨论了量子点SLD研制中存在的问题、解决方法和发展趋势。量子点SLD在展宽光谱和提高输出功率上展示了巨大的潜力,它的成功有力地推动了其他宽增益谱器件的研制。The history of superluminescent diodes （SLDs） and the proposal and merits of quantum dot （QD） SLDs are reviewed briefly. And then the operation principle, device structure and characterization parameters of SLDs are described. The recent research advances in QD-SLDs are summarized in detail. Based on the inhomogeneous size distribution of self-assembled QDs, optimized structure design of active region and high optical quality of QD material, now the performance of QD-SLDs is better than that of quantum well-SLDs. For example, the output spectral width of QD-SLD can reach up to 150 nm. The output power in the order of hundred milliwatts can be realized. The applications of SLDs, in the aspects of fiber-optic gyroscope, optical coherence tomography, optical communications and broadband external cavity tunable laser, are introduced. The key problems for improving the properties of QD-SLDs, future trends and prospects are discussed. QD-SLDs show immense potential in broadening the spectrum and improving the output power. The success of QD-SLDs effectively promotes the fabrication of related devices with wide gain spectrum characteristic.

关 键 词：超辐射发光管 自组织量子点 尺寸非均匀性 宽光谱 大功率 

分 类 号：O472.3[理学—半导体物理] TN304.054[理学—物理]