Comprehensive size effect on PbSe quantum dot-doped liquid-core optical fiber
Comprehensive size effect on PbSe quantum dot-doped liquid-core optical fiber
复制标题
PbSe量子点掺杂液芯光纤的综合尺寸效应
DOI：
10.1016/j.optcom.2016.09.036
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发表时间：
2017-01
期刊：
影响因子：
--
通讯作者：
Youjin Zheng
中科院分区：
文献类型：
--
作者：
Lei Zhang;Bing Zhang;Lina Ning;Shuai Li;Youjin Zheng
从理论上研究了掺PbSe量子点（QD）液芯光纤光谱的综合尺寸效应，包括PbSe量子点的颗粒尺寸和颗粒数效应以及光纤长度和光纤直径效应。为了比较，将掺杂浓度、泵浦强度和波长固定在适当的值。随着量子点直径、量子点数目、光纤长度和光纤直径的增加，发射光谱峰的红移逐渐增大，并随着量子点数目的增加达到饱和。得到了光谱强度随四个尺寸参数的变化规律，并对不同尺寸的PbSe量子点进行掺杂，得到了相应的“最佳”（在其他参数一定的情况下）光纤长度、直径和量子点数目。此外，每种“最佳”值随其他三个尺寸参数的变化而变化。这四个尺寸参数相互制约，共同影响光谱特征。计算结果与实验数据吻合较好。该研究为光纤器件的设计提供了理论依据。
We have theoretically studied a comprehensive size effect on the spectra of PbSe quantum dot (QD)-doped liquid-core optical fiber, including PbSe QD's particle size and particle number effect, and fiber length and fiber diameter effect. The doping concentration, pump intensity and wavelength were fixed at proper values for comparison. The red shift of emission spectral peak increased with QD diameter, QD number, fiber length and fiber diameter, and reached up to saturation with increasingly QD number which was explained in detail. The evolutions of spectral intensity with the four size parameters were gained, and the related “optimal” (under the certain other parameters) fiber length, diameter and QD number were observed for PbSe QDs of different size as the dopant. Furthermore, each kind of the “optimal” value changed with the other three size parameters. These four size parameters restricted each other, and affected the spectral features together. The calculating results fitted well to the experimental data. This research might be a theoretical basis in the design of optical fiber-based device.
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