| 新型ZnO纳米针的双光子激射特性 |
| |
| 引用本文： | 姜小芳,李小龙,曹俊枫,赵丰华,郭萌祖,扶雄辉,丘志仁,吴明娒.新型ZnO纳米针的双光子激射特性[J].发光学报,2010,31(1):109-113. |
| |
| 作者姓名： | 姜小芳 李小龙 曹俊枫 赵丰华 郭萌祖 扶雄辉 丘志仁 吴明娒 |
| |
| 作者单位： | 1. 中山大学 光电材料与技术国家重点实验室, 广东 广州 510275;2. 中山大学 化学与化工学院, 广东 广州 510275 |
| |
| 基金项目： | 国家自然科学基金(50872158);;国家“973”计划(2004CB719804);;广东省自然科学基金(8251027501000010);;广州市科技局推荐项目(2005Z3-C7451)资助项目 |
| |
| 摘 要： | 室温下采用640nm的飞秒脉冲激光泵浦ZnO纳米针得到双光子诱导的光致发光谱。结合单光子下的研究结果,实验分析了双光子泵浦下样品随着受激能量增强产生的三种紫外发射行为并归结为自由激子自发辐射,激子-激子散射和电子空穴等离子体复合。双光子泵浦下ZnO纳米针的受激阈值是4.82GW/cm2,远小于其他ZnO微纳材料的双光子阈值(TW/cm2)。结果表明:这种新型的ZnO纳米针结构能更有效地产生双光子激射,这在纳米激光器方面将会有很大的应用前景。
|
| 关 键 词： | 氧化锌 纳米针 受激发射 光致发光 |
| 收稿时间： | 2009-09-10 |
Stimulated Emission Property of Novel ZnO Nanoneedle Pumped by Two-photon |
| |
| JIANG Xiao-fang,LI Xiao-long,CAO Jun-feng,ZHAO Feng-hua,GUO Meng-zu,FU Xiong-hui,QIU Zhi-ren,WU Ming-mei.Stimulated Emission Property of Novel ZnO Nanoneedle Pumped by Two-photon[J].Chinese Journal of Luminescence,2010,31(1):109-113. |
| |
| Authors: | JIANG Xiao-fang LI Xiao-long CAO Jun-feng ZHAO Feng-hua GUO Meng-zu FU Xiong-hui QIU Zhi-ren WU Ming-mei |
| |
| Institution: | 1. State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-Sen University, Guangzhou 510275, China;2. Institite of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China |
| |
| Abstract: | Stimulated emissions in a novel nanoneedle ZnO composite with two complex needle parts were investigated using the two-photon induced time-resolved photoluminescence pumped with the femtosecond pulse at the wavelength of 640 nm in room temperature.Comparing with the results of single-photon pumped,we observe three operation mechanisms of two-photon induced UV emission behaviors with the excitation power increasing:spontaneous emission of free-exciton,exciton-exciton(E-E) scattering and electron-hole-plasma ... |
| |
| Keywords: | ZnO nanoneedle stimulated emission photoluminescence |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《发光学报》浏览原始摘要信息 |
| 点击此处可从《发光学报》下载免费的PDF全文 |
|
