单量子点和纳微组合结构中激子的超快速激光光谱研究

项目名称： 单量子点和纳微组合结构中激子的超快速激光光谱研究

项目编号： No.10874250

项目类型： 面上项目

立项/批准年度： 2009

项目学科： 电工技术

项目作者： 汪河洲

作者单位： 中山大学

项目金额： 48万元

中文摘要： 本项目发表SCI论文43篇（SCI影响因子大于3占17篇）。包括Phys. Rev. Lett., APL，PRB, OL，OE等期刊杂志；综述文章一篇；会议论文18篇（邀请报告5篇）。本项目在单量子点中的激子动力学、多光子发光机理的超快速激光光谱、微纳复合结构器件物理机制等方面开展了各种各样的经典电磁行为的理论和实验研究。主要成果如下：实验研究了ZnO:Eu纳米晶的增强的紫外激射；理论研究了量子点激子超辐射的条件。实验研究了纳米颗粒表面超快发光、三光子诱导激射和稀土配合物双光子吸收诱导荧光的研究。首次在理论和实验上报道了受时间反演不变性保护的光学系统中的稳定传输行为，该论文是在PRL上无需修改而直接录用的。实现了斜方晶系光子晶体波导中的宽带慢光；实现了全息型错位螺旋手性光子晶体的Fano响应；理论推导了特异材料平板结构的隐身/完美成像转换条件；研究了环共振器表面等离子体模式；左手光子晶体实现自准直；发现了含特异材料结构的全向响应模；研究了一维准周期结构中准Bloch震荡。开展了人工纳微结构的全息三维显示研究。利用多种方法和特殊非线性结构实现了对带隙孤子的调控。

中文关键词： 激子；量子点；纳维结构；激光全息；超快光谱

英文摘要： The project has published 43 SCI papers. There are 17 paper which SCI impact factor is larger than 3. Some are Phys. Rev. Lett., APL, PRB, OL, OE. One of them is a review paper. There are 18 proceedings (five of them are invited report). The project has carried out topics on dynamics of exciton in single quantum dot, multi-photon absorption of heterocyclic molecules, and other EM behavior in micro-nano structures in theory and experiment. The main results are as follows. Enhanced ultraviolet lasing is observed in europium-doped zinc oxide nanocrystals. The condition of exciton superradiance in quantum dot is studied. Surface emission characteristics of ZnO nanoparticles, as well as effective three-photon induced lasing, is observed. Two-photon absorption induced luminescence in lanthanide complexes is studied. Backscattering-immune chiral EM behavior is observed in a time reversal invariant photonic system, which is accepted by PRL without any revision. Wideband slow light and dispersion control is realized in oblique lattice photonic crystal waveguides. Fano resonance is observed in holographic chiral photonic crystal. The condition of cloak/image conversion is proved. The SPP guided mode in ring resonator is investigated. Self collimation behavior is obtained in left-handed photonic crystal. Multiple omnidirectional modes are found in metamaterial-based multiple quantum well. The quasi-Bloch oscillations are studied in 1D quasi-periodic structure. We have also carried out research on 3D holographic imaging, as well as spatial solitons propagations and dynamics in various methods and special nonlinear structure.

英文关键词： exciton; quantum dots; nano-micro structures; laser holography; ultrafast spectrum