Random lasing in dye-doped polymer random media with a bubble structure
Random lasing in dye-doped polymer random media with a bubble structure
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DOI：
10.1364/josab.34.001497
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发表时间：
2017-07
影响因子：
1.9
通讯作者：
T. Okamoto;Ryosuke Yoshitome
中科院分区：
文献类型：
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作者：
T. Okamoto;Ryosuke Yoshitome
实验研究了具有非均匀分布散射体的染料掺杂聚合物随机介质的随机激光发射。气泡结构是利用随机分布在增益介质中的非散射间隔粒子来实现的一种随机结构。实验结果表明，加入适量间隔粒子的气泡结构RL比常规RL具有更高的光谱峰和更大的斜率效率。当间隔粒子的大小变化最大时，观察到最大的峰值强度。此外，对激光模式的分析表明，光谱峰强度的增加可部分归因于BS的模式选择特性。
We experimentally investigate random laser (RL) emission from dye-doped polymer random media with inhomogeneously distributed scatterers. A random structure, which we call a bubble structure (BS), is realized by using nonscattering spacer particles randomly distributed in a gain medium. The experimental results show that the bubble-structured RL that incorporates an appropriate amount of spacer particles exhibits a higher spectral peak and a larger slope efficiency than conventional RLs. The highest peak intensity is observed when the size variation of spacer particles is maximized. Furthermore, an analysis of laser modes reveals that an increase in the spectral peak intensity can be partly attributed to the mode selection properties of the BS.