Broadband near-infrared emission from Cr4+-doped transparent Zn1.7SiO4 glass ceramics

被引：4

作者：

Ma, Hongping ^{[1
,2
]}

Liu, Ping ^{[1
]}

Yang, Qinghua ^{[3
]}

Deng, Degang ^{[3
]}

Xu, Shiqing ^{[3
]}

机构：

[1] Shanghai Univ Sci & Technol, Coll Mat Sci & Engn, Shanghai 200093, Peoples R China

[2] Zhejiang Univ Sci & Technol, Sch Mech & Automot Engn, Hangzhou 310012, Zhejiang, Peoples R China

[3] China Jiliang Univ, Coll Mat Sci & Engn, Hangzhou 310018, Zhejiang, Peoples R China

来源：

MATERIALS LETTERS | 2014年 / 116卷

基金：

中国国家自然科学基金;

关键词：

Nanocomposites; Optical materials and properties; Broadband infrared luminescence; SPECTROSCOPY; LASER;

D O I：

10.1016/j.matlet.2013.10.047

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Transparent Cr4+ doped SiO2-Al2O3-ZnO-Li2O-K2O glass ceramics were prepared by conventional melting method. X-ray diffraction analysis revealed that the Zn1.7SiO4 nanocrystals were precipitated in the glass matrix after heating treat between 625 degrees C and 700 degrees C for 2 h. The crystallite size is about 5 nm after the heat treatment was performed at 650 degrees C. The energy levels of Cr4+-doped glass ceramics are close to the cross of E-1 and T-3 states. Broad infrared luminescence centered at 1307 nm with a full width at half maximum (FWHM) of more than 246 nm was observed from the sample heat treated at 650 degrees C excited by an 808 nm excitation laser diode. And the lifetime was about 1.97 mu s at 1307 nm. The results show the transparent glass ceramics containing Cr4+-doped Zn1.7SiO4 have potential application in optical communication. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：13 / 15

页数：3

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