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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >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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Broadband near-infrared luminescence and tunable optical amplification around 1.55 μm and 1.33 μm of PbS quantum dots in glasses

机译：眼镜中的PbS量子点附近的宽带近红外发光和可调光学放大倍数约为1.55μm和1.33μm

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摘要

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 2200 nm has been obtained by controlling the glassy matrix and preparation parameters. Obvious optical amplification at communication windows of 1.55 μm and 1.33 μm 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.
机译：通过热处理制备了具有窄尺寸分布的PbS量子点（QDs）的硅酸盐玻璃。透射电子显微镜（TEM）结果表明，球形PbS量子点密集分布在玻璃状基质中。使用ZnS-PbO代替PbS作为PbS QD的前体，玻璃中PbS QD的尺寸分布变得更加均匀。通过控制玻璃状基质和制备参数，可获得从1100至2200 nm的可调红外发光。在1.55μm和1.33μm的通讯窗口处探测到明显的光学放大，以ZnS-PbO为前体的PbS QDs掺杂玻璃表现出较大的光学放大。掺有PbS QDs的玻璃具有强烈的光放大作用，被认为是宽带光纤放大器和可调光纤激光器的增益介质。

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