激光阈值
随机激光器
材料科学
纳米线
双金属片
等离子体子
激光器
光电子学
纳米技术
光学
波长
物理
金属
冶金
作者
Xiaoyu Shi,Yanrong Wang,Zhaona Wang,Haopeng Sun,Dahe Liu,Yongyi Zhang,Qingwen Li,Jin‐Wei Shi
摘要
A plasmonic random laser is fabricated using gold-silver bimetallic porous nanowires with abundant nanogaps that provide strong feedback or gain channels for coherent lasing from dye molecules. The strong confinement of the nanogaps allows the bimetallic porous nanowire-based random laser, which is pumped by ns pulses, to operate with a very low threshold and extremely low concentrations of Rhodamine 6 G (as low as 0.067 mM). This random laser can be used as a pump source for another coherent random laser based on oxazine. These results provide a basis for studies of coherent random lasing pumped by another random laser.
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