Ag NPs induced near-infrared emission enhancement of Er3+/Tm3+codoped tellurite glass

• 作者: XIA Li-zhang ZHANG Yu SHEN Xin-jie HUANG Bo ZHOU Ya-xun
• 来源期刊: 光电子快报（英文版）
• 年，卷（期）: 2021,（2）
• 所属期刊栏目: Materials
• 页码范围: 80-84
• 页数: 5页
• 语种: 英文
• DOI: 10.1007/s11801-021-0011-z

摘要

Ag nanoparticles(NPs)were introduced into Er3+/Tm3+codoped tellurite glasses prepared using melt-quenching and heat-treated techniques.The glass samples were characterized by the differential scanning calorimeter(DSC),X-ray diffraction(XRD),transmission electron microscopy(TEM)and photoluminescence to reveal the Ag NPs induced broadband near-infrared band emission enhancement of Er3/Tm3+ions.The studied glasses possessed good thermal stability with AT larger than 137 ℃.For glass sample heat-treated at 360 ℃ for 6h,the nucleated Ag NPs in near-spherical shape with an average diameter about 6.5 nm dispersed in the glass matrix.Under the excitation of 808 nm laser diode(LD),the broadband near-infrared fluorescence emission extending from 1 350 nm to 1 620 nm,owing to the combined contributions from the 3H4→3F4 transition of Tm3+at 1.47 pm band and the 41 13/2→4115/2 transi-tion of Er3+at 1.53 pm band,improved significantly with the introduction of Ag NPs,which is mainly attributed to the increased local electric field.The present results indicate that Er3+/Tm3+/Ag NPs codoped tellurite glass with good thermal stability is a promising glass material for broadband fiber amplifiers of WDM transmission systems.