Highly efficient,tunable,ultrabroadband NIR photoemission from Bi-doped nitridated germanate glasses toward all-band amplification in optical communication  

作　　者：陈福广 陈智 邱建荣 张帅 马志军 Fuguang Chen;Zhi Chen;Jianrong Qiu;Shuai Zhang;Zhijun Ma(Research Center for Humanoid Sensing,Zhejiang Lab,Hangzhou 311121,China;State Key Laboratory of Modern Optical Instrumentation,College of Optical Science and Engineering,Zhejiang University,Hangzhou 310027,China;Zhejiang Chinese Medical University,Hangzhou 311100,China)

机构地区：[1]Research Center for Humanoid Sensing,Zhejiang Lab,Hangzhou 311121,China [2]State Key Laboratory of Modern Optical Instrumentation,College of Optical Science and Engineering,Zhejiang University,Hangzhou 310027,China [3]Zhejiang Chinese Medical University,Hangzhou 311100,China

出　　处：《Chinese Optics Letters》2023年第5期63-69,共7页中国光学快报（英文版）

基　　金：supported by the National Key R&D Program of China(No.2021YFB2800500);the Research Program of Zhejiang Lab(No.113014-AC2101);the National Natural Science Foundation of China(Nos.51872095,U20A20211,and 62105297);the Zhejiang Provincial Natural Science Foundation(Nos.LQ22A040011 and LZ23F050002)。

摘　　要：Bismuth(Bi)-doped near-infared(NIR)glass that can cover the entire optical communication window(850,1310,and1550 nm)has become the subject of extensive research for developing photonic devices,particularly,tunable fiber lasers and ultrabroadband optical amplifiers.However,the realization of highly efficient NIR luminescence from Bi-doped glass is still full of challenges.Notably,due to the co-existence of multiple Bi NIR centers in the glass,the origin of newly generated Bi NIR emission peaks at~930 and~1520 nm is still controversial.Here,we report a new Bi-doped nitridated germanate glass with tunable ultrabroadband NIR emission(850–1700 nm)and high external quantum efficiency(EQE)of~50%.A series of studies,including spectral analysis,nuclear magnetic resonance(NMR),and others,provide powerful evidence for the mechanism of luminescence enhancement and tunability,and make reasonable inferences about the origin of the new emission bands at~930 and~1520 nm.We believe that the results discussed above would enrich our understanding about multiple Bi NIR emission behaviors and contribute to the design and fabrication of highly efficient Bi-doped ultrabroadband wavelength-tunable optical glass fiber amplifiers and lasers in the future.

关 键 词：BISMUTH germanate glass near-infrared luminescence 

分 类 号：TQ171.7[化学工程—玻璃工业] TN929.1[化学工程—硅酸盐工业]