掺铒锗碲酸盐玻璃及其玻璃陶瓷的中红外激光材料光谱性能。

Spectroscopic properties in Er-doped germanotellurite glasses and glass ceramics for mid-infrared laser materials.

机构信息

State Key Laboratory of Luminescent Materials and Devices and Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China.

Key Laboratory of Renewable Energy, Guangdong Key Laboratory of New and Renewable Energy Research and Development, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China.

出版信息

Sci Rep. 2017 Mar 7;7:43186. doi: 10.1038/srep43186.

DOI:10.1038/srep43186

PMID:28266570

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5339781/

Abstract

Transparent Er-doped germanotellurite glass ceramics (GCs) with variable Te/Ge ratio were prepared by controllable heat-treated process. X-ray diffraction (XRD) and transmission electron microscope (TEM) confirmed the formation of nanocrystals in glass matrix. Raman spectra were used to investigate the evolution of glass structure and photon energy. Fourier transform infrared (FTIR) spectra were introduced to characterize the change of hydroxyl group (OH) content. Enhanced 2.7 μm emission was achieved from Er-doped GCs upon excitation with a 980 nm laser diode (LD), and the influence of GeO concentration and heat-treated temperature on the spectroscopic properties were also discussed in detail. It is found that the present Er-doped GC possesses large stimulated emission cross section at around 2.7 μm (0.85 × 10 cm). The advantageous spectroscopic characteristics suggest that the obtained GC may be a promising material for mid-infrared fiber lasers.

摘要

掺铒碲锗酸盐玻璃陶瓷（GCs）具有可变的 Te/Ge 比，通过可控热处理工艺制备而成。X 射线衍射（XRD）和透射电子显微镜（TEM）证实了纳米晶在玻璃基质中的形成。拉曼光谱用于研究玻璃结构和光子能量的演变。傅里叶变换红外（FTIR）光谱用于表征羟基（OH）含量的变化。在 980nm 激光二极管（LD）激发下，掺铒 GCs 实现了增强的 2.7μm 发射，并且还详细讨论了 GeO 浓度和热处理温度对光谱性质的影响。结果发现，本研究中的掺铒 GC 在 2.7μm 附近具有较大的受激发射截面（0.85×10-20cm2）。有利的光谱特性表明，所获得的 GC 可能是中红外光纤激光器的一种有前途的材料。