Broadband near-infrared luminescence and tunable optical amplification around 1.55 μm and 1.33 μm of PbS quantum dots in glasses
Broadband near-infrared luminescence and tunable optical amplification around 1.55 μm and 1.33 μm of PbS quantum dots in glasses
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DOI：
10.1016/j.jallcom.2011.07.030
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发表时间：
2011-09
影响因子：
6.2
通讯作者：
G. Dong;Botao Wu;Fangteng Zhang;Liaolin Zhang;M. Peng;Dongdan Chen;E. Wu;J. Qiu
中科院分区：
文献类型：
--
作者：
G. Dong;Botao Wu;Fangteng Zhang;Liaolin Zhang;M. Peng;Dongdan Chen;E. Wu;J. Qiu
通过热处理制备了具有窄尺寸分布的含有PbS量子点（QD）的硅酸盐玻璃。透射电子显微镜（TEM）结果表明球形 PbS QD 致密地分散在玻璃基体中。使用ZnS-PbO代替PbS作为PbS QD的前驱体，玻璃中PbS QD的尺寸分布变得更加均匀。通过控制玻璃基体和制备参数，获得了1100至2200nm的可调谐红外发光。在 1.55μm 和 1.33μm 的通信窗口处检测到明显的光学放大，并且以 ZnS-PbO 作为前驱体的 PbS QD 掺杂玻璃表现出更大的光学放大。具有强光放大作用的PbS QDs掺杂玻璃被认为是宽带光纤放大器和可调谐光纤激光器增益介质的有希望的候选者。
Silicate glasses containing PbS quantum dots (QDs) with narrow size distribution were prepared through heat treatment. Transmission electron microscopy (TEM) results show that spherical PbS QDs are densely dispersed in the glassy matrix. Using ZnS–PbO to replace PbS as precursor of PbS QDs, the size distribution of PbS QDs in glasses becomes more uniform. Tunable infrared luminescence from 1100 to 2200nm has been obtained by controlling the glassy matrix and preparation parameters. Obvious optical amplification at communication windows of 1.55μm and 1.33μm is probed, and the PbS QDs doped glasses using ZnS–PbO as precursor exhibit larger optical amplification. The PbS QDs doped glasses with intense optical amplification are considered to be promising candidate as gain medium for broadband fiber amplifier and tunable fiber laser.