Fiber-Type Random Laser Based on a Cylindrical Waveguide with a Disordered Cladding Layer.
Fiber-Type Random Laser Based on a Cylindrical Waveguide with a Disordered Cladding Layer.
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基于无序包层柱面波导的光纤型随机激光器
DOI：
10.1038/srep26473
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发表时间：
2016-05-25
影响因子：
4.6
通讯作者：
Rao YJ
中科院分区：
文献类型：
--
作者：
Zhang WL;Zheng MY;Ma R;Gong CY;Yang ZJ;Peng GD;Rao YJ
本文报道了一种光纤型随机激光器(RL)，它是由一根毛细管在其内表面涂覆一层无序层，并在芯区填充一种增益(激光染料)溶液制成的。这种光纤型光学结构，无序层将随机散射光提供到增益区，而圆柱形波导提供光的限制，帮助形成随机激光模式，并使得能够以灵活而有效的方式制造随机激光器。我们发现RL对核心区的激光染料浓度很敏感，并且激光强度与增益液中的粒子浓度之间存在很好的指数关系。该结构可以为实现随机激光和基于随机激光的传感提供良好的平台。
This letter reports a fiber-type random laser (RL) which is made from a capillary coated with a disordered layer at its internal surface and filled with a gain (laser dye) solution in the core region. This fiber-type optical structure, with the disordered layer providing randomly scattered light into the gain region and the cylindrical waveguide providing confinement of light, assists the formation of random lasing modes and enables a flexible and efficient way of making random lasers. We found that the RL is sensitive to laser dye concentration in the core region and there exists a fine exponential relationship between the lasing intensity and particle concentration in the gain solution. The proposed structure could be a fine platform of realizing random lasing and random lasing based sensing.