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飞秒激光激发的β-Ga₂O₃粉体的上转换发光研究

Upconversion Luminescence of β-Ga₂O₃ Powders by Femtosecond Laser Irradiation

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【Author】 WANG Yin-zhen;LI Ning;DUAN Ping-ping;ZHOU Liang-hua;HE Song-hua;SUN Xu-wei;LI Wei;CHU Ben-li;HE Qin-yu;Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials,School of Physics and Telecommunication Engineering,South China Normal University;

【机构】华南师范大学物理与电信工程学院广东省量子调控工程与材料重点实验室；

【摘要】采用水热法制备了β-Ga2O3粉体,利用X射线衍射(XRD)、扫描电子显微镜(SEM)、拉曼光谱和光致发光谱等测试手段对合成样品的结构、形貌和发光性能进行了表征。结果表明:所得样品为单斜晶系的β-Ga2O3粉体;在800 nm飞秒激光下,β-Ga2O3粉体产生上转换发光现象,出现了394 nm,430 nm,448 nm,458 nm,470 nm,476nm,525 nm,552 nm和652 nm上转换发射峰,实现了紫、蓝、绿和红上转换发光。更多还原

【Abstract】 β-Ga2O3 powders were prepared by hydrothermal method. The structure,morphology and luminescent properties of samples were characterized by X-ray diffraction( XRD),scanning electron microscopy( SEM),Raman spectroscopy,and photoluminescence( PL) spectra. The results reveal that the obtained samples are monoclinic phase of β-Ga2O3 powders. Under 800 nm femtosecond laser excitation,the β-Ga2O3 powders can emit violet,green,blue and red emission,upconversion emissions peaks centered at 394 nm,430 nm,448 nm,458 nm,470 nm,476 nm,525 nm,552 nm and 652 nm.更多还原