The possibility for surface plasmons lasers
The possibility for surface plasmons lasers
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DOI：
10.1364/oe.17.001622
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发表时间：
2009-02-02
期刊：
影响因子：
3.8
通讯作者：
Grebel, H.
中科院分区：
文献类型：
--
作者：
Li, R.;Banerjee, A.;Grebel, H.
我们首次展示了表面等离子体激元激光器的特性：阈值、增益、谱线窄化和可见光范围内的反馈。表面金属波导由在铝基板（阳极氧化铝或AAO）顶部上的50nm厚的氧化铝层中的纳米级孔阵列组成。在一些情况下，也在穿孔氧化物层的顶部上添加双层石墨烯。孔的亚波长阵列使得能够耦合到波导和从波导耦合，以及向表面模式提供反馈。增益介质分子（荧光素）嵌入结构的孔中。当用脉冲激光泵浦时，清楚地表明阈值和谱线窄化30%。(C)2009年美国光学学会
We have demonstrated for the first time, attributes of a surface plasmons' laser: threshold, gain, spectral line narrowing and feedback in the visible range. The surface metallic waveguides were consisted of a nanoscale hole-array in a 50 nm thick layer of aluminum oxide on top of aluminum substrate (anodized aluminum oxide or, AAO). In some cases, two-layer graphene was added on top of the perforated oxide layer, as well. The sub-wavelength array of holes enabled coupling to and from the waveguides as well as, providing feedback to the surface modes. The gain media molecules (fluorescein) were imbedded in the structure's pores. Threshold and spectral line narrowing of 30% were clearly demonstrated when pumped with a pulsed laser. (C) 2009 Optical Society of America