发光学报2017，Vol.38Issue(7)：855-861,7.DOI:10.3788/fgxb20173807.0855
铜掺杂氧化锌纳米棒的非线性光学响应竞争特性
Competition in Nonlinear Optical Properties of Cu-doped ZnO Nanorods
摘要
Abstract
In order to study the unique nonlinear optical properties and excitation mechanism, Cu-doped zinc oxide nanorods were excited by femtosecond pulsed laser. Under the excitation of 750 nm, the second harmonic peak is almost ignore meanwhile only the exciton peak and Cu doping re-lated peak. The increase of the excitation intensity leads to a nonlinear increase of the intensity of the two emission peaks. The position of exciton peak exhibits a red shift meanwhile the position of defect peak does not move. If the excitation intensity further increases, the intensity of the defect re-lated emission will decrease and the intensity of the exciton emission will increase continuously. When the excitation wavelength increases to 760 nm, the fluorescence spectrum of the sample can be clearly recognized the coexistence of the second harmonic peak and the exciton emission as well as the defect related emission. With the increasing of the excitation wavelength, the intensity of the second harmonic increases and the intensity of exciton emission and defect related emission de-crease. At the excitation wavelengths of 790 nm and 800 nm, the exciton emission and defect related emission cannot be found, and the nonlinear spectrum is dominated by second harmonic generation. By selecting the appropriate excitation wavelength and excitation intensity, the transition of theluminescent color display can be realized, which makes Cu-doped ZnO nanorods as the potential of all-optical display.关键词
非线性光学/光致发光/金属掺杂/氧化锌Key words
nonlinear optical/photoluminescence/metal doping/zinc oxide分类
数理科学引用本文复制引用
戴军,陈景东,何影记,陈泳竹..铜掺杂氧化锌纳米棒的非线性光学响应竞争特性[J].发光学报,2017,38(7):855-861,7.基金项目
国家自然科学基金(61475038,11174061,61675001) （61475038,11174061,61675001）
广东省教育厅项目(2014KZDXM059)资助 Supported by National Natural Science Foundation of China (61475038,11174061,61675001) （2014KZDXM059）
Project of Department of Educa-tion of Guangdong Province (2014KZDXM059) （2014KZDXM059）
