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宁波大学高等技术研究院 红外材料及器件实验室,浙江 宁波 315211
Published:2022-01,
Received:28 October 2021,
Revised:09 November 2021,
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Gang-jie ZHOU, Yi-xuan HU, Lin-ling TAN, et al. Broadband Near-infrared Luminescence and Regulation Mechanism of Tellurium-doped Calcium-Aluminum-germanate Glass. [J]. Chinese Journal of Luminescence 43(1):51-57(2022)
Gang-jie ZHOU, Yi-xuan HU, Lin-ling TAN, et al. Broadband Near-infrared Luminescence and Regulation Mechanism of Tellurium-doped Calcium-Aluminum-germanate Glass. [J]. Chinese Journal of Luminescence 43(1):51-57(2022) DOI: 10.37188/CJL.20210337.
可调宽带近红外发光材料作为红外光源和可调谐光纤激光器核心组件,在高容量光纤通信、成像和遥感等现代技术中发挥着至关重要的作用。本文研究了碲掺杂钙-铝-锗酸盐玻璃的宽带近红外发光性能调控方案及其机理。通过引入碳构建还原气氛,还原TeO
2
原料为碲原子;再优化CaO、Al
2
O
3
含量,调整碲掺杂钙-铝-锗酸盐玻璃中碲拓扑笼的结构和大小,稳定并调控碲团簇发光中心,实现高效且可调谐的宽带近红外发光。最后通过改变TeO
2
掺杂含量,提供可形成团簇的合适含量碲源,进一步增强碲近红外发光,并揭示了碲近红外发光性能调控机理。本研究为未来宽带、高效、可调谐的近红外发光材料设计提供了重要指导,推进了其在宽带光放大器和可调谐激光器中的应用。
Tunable broadband near-infrared(NIR)-emitting materials play a crucial role as NIR light sources and tunable fiber lasers in modern technologies such as high-capacity telecommunication
imaging
and remote sensing. In this work
we report the control scheme and mechanism of the broadband near-infrared luminescence properties in the tellurium-doped calcium-aluminum-germanate glass. By introducing carbon to construct a reducing atmosphere
the raw material TeO
2
is reduced to tellurium element. Through optimizing CaO and Al
2
O
3
content
the configurations and size of topological cages in tellurium doped calcium-aluminum-germanate glass were adjusted to stabilize and tailor tellurium clusters
enabling tunable NIR emission. Furthermore
adjusting the content of TeO
2
provides optimal tellurium source to form clusters
and thus enhancing tellurium NIR luminescence. The regulation mechanism of tellurium NIR luminescence performance in the calcium-aluminum-germanate glass is clarified. This work provides important guidance for the design of broadband
efficient and tunable NIR luminescent materials
promoting their practical application in broadband optical amplifiers and tunable lasers.
碲团簇近红外发光宽带可调谐调控机理
tellurium clustersnear-infrared luminescencetunable broadbandregulation mechanism
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