Room-temperature near-infrared up-conversion lasing in single-crystal Er-Y chloride silicate nanowires.

Room-temperature near-infrared up-conversion lasing in single-crystal Er-Y chloride silicate nanowires.
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单晶 Er-Y 氯化硅纳米线的室温近红外上转换激光

DOI:
10.1038/srep34407
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发表时间:
2016-10-05
期刊:
影响因子:
4.6
通讯作者:
Zhou Z
Zhou Z
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Ye R;Xu C;Wang X;Cui J;Zhou Z

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在室温下,用1476 nm激光泵浦铒(Er)-氯化钇(Y)硅酸盐纳米线,实现了近红外上转换激光。发射覆盖了一个非常宽的波长范围(400-1000纳米)。在发射的平均泵浦功率约为7 mW时,观察到985 nm峰值的明显阈值。在阈值以上,随着泵功率的增大,强度呈线性增加。当测量温度从30 K降低到7 K时,985 nm的半最大全宽从1.25 nm减小到0.25 nm,这是迄今为止980 nm微激光器的最窄线宽。我们的演示提出了一种利用Er-Y纳米线上转换机制实现可调谐近红外激光的新方法,这在探索工作在近红外波长的纳米级光电器件方面开辟了新的领域。
Near-infrared up-conversion lasing in erbium(Er)-yttrium(Y) chloride silicate nanowires was demonstrated when pumped by 1476 nm laser at room temperature. The emission covers a very wide wavelength range (400–1000 nm). A clear threshold for 985 nm peak was observed at a launched average pump power of approximately 7 mW. Above threshold, the intensity increases linearly when turning up the pump power. The full width at half maximum at 985 nm decreases from 1.25 nm to 0.25 nm when reducing the measurement temperature from 30 K to 7 K, which is the narrowest linewidth of 980 nm micro-lasers to date. Our demonstration presents a possible novel method of utilizing up-conversion mechanism in Er-Y nanowire to achieve tunable near-infrared laser, which breaks new ground in the exploration of nanoscale optoelectronic devices operating at near-infrared wavelength.
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