KYb_(3)F_(10)∶Er^(3+)纳米复合微晶玻璃制备与中红外发光特性  

Elaboration and Mid-infrared Emission of KYb_(3)F_(10)∶Er^(3+)Nanocrystals Embedded in Glass Ceramics

作　　者：赵鹏 叶重阳 于曼 刘超 刘雪云 郭海[3] ZHAO Peng;YE Chong-yang;YU Man;LIU Chao;LIU Xue-yun;GUO Hai(The Research Institute of Advanced Technology, Ningbo University, Ningbo 315211, China;Ningbo Institute of Oceanography, Ningbo 315832, China;Department of Physics, Zhejiang Normal University, Jinhua 321004, China)

机构地区：[1]宁波大学高等技术研究院,浙江宁波315211 [2]宁波海洋研究院,浙江宁波315832 [3]浙江师范大学物理系,浙江金华321004

出　　处：《发光学报》2022年第2期174-181,共8页Chinese Journal of Luminescence

基　　金：国家自然科学基金(51702172);浙江省自然科学基金(LY20A040002)资助项目。

摘　　要：由于在军事和民生领域重要的应用潜力,~3μm激光光源的开发一直以来受到了极大关注。传统中红外激光玻璃因其较高的声子能量会极大削弱发光离子的辐射跃迁几率,导致无法获得有效激光输出。因此,寻找高效且稳定的中红外~3μm激光增益材料具有重要价值和研究意义。本文报道了在氟硅酸盐玻璃中SiO_(2)-ZnF_(2)-KF-YbF_(3)-ErF_(3)原位析出KYb_(3)F_(10)∶Er^(3+)纳米晶,获得的微晶玻璃样品可保持80%以上的透过率。利用X射线衍射仪(XRD)和透射电子显微镜(TEM)表征了玻璃中纳米晶体种类和元素分布。在980 nm激光二极管(LD)激发下,热处理后的样品中Er^(3+)位于2.7μm处的发射带强度获得极大增强(相比于未经热处理的样品增强了约19倍),进一步结合吸收光谱和稳态光谱结果对其发光增强机理进行了解释。研究结果可为开发~3μm激光增益材料提供相关数据和研究思路。Mid-infrared lasers operating at around 3μm have been paid much attention due to their significant potential at civil and military field.Traditional mid-infrared laser glass matrix presents high phonon energy,which causes the radiative transition probability of luminescent ions being greatly weakened,and thus leads to the inability to obtain effective laser output.Therefore,it is of great value to explore efficient and stable gain materials for 3μm laser.In this paper,we report the in-situ precipitation of KYb_(3)F_(10)∶Er^(3+)nanocrystals from SiO_(2)-ZnF_(2)-KF-YbF_(3)-ErF_(3) fluorosilicate glass matrix.The obtained glass ceramic can maintain more than 80%transmittance.The nanocrystal species and elemental distribution in the glass were characterized by X-ray diffractometry(XRD)and transmission electron microscopy(TEM)technology.Under 980 nm laser diode(LD)excitation,the mid-infrared emission at 2.7μm of Er^(3+) for the heat-treated sample is greatly enhanced,which is about 19 times stronger than that of the precursor sample.The related mechanism for the luminescence enhancement is further explained by the results of absorption spectra and steady state fluorescence spectra.The present results may provide reference data and research ideas for the development of~3μm laser gain materials.

关 键 词：微晶玻璃 氟化物纳米晶 铒离子 中红外荧光 

分 类 号：O482.31[理学—固体物理]