Proposed graphene nanospaser
Proposed graphene nanospaser
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DOI：
10.1038/lsa.2014.72
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发表时间：
2014-07-01
影响因子：
19.4
通讯作者：
Stockman, Mark I.
中科院分区：
文献类型：
--
作者：
Apalkov, Vadym;Stockman, Mark I.
我们提出了一种在中红外区域工作的新型纳米激光器，并利用石墨烯纳米贴片作为其等离子体核心，量子阱级联作为其增益介质。这种设计利用了石墨烯中由于其高电子迁移率而导致的低光学损耗。所提出的量子级联石墨烯激光器产生的光场具有前所未有的高纳米定域性，这是石墨烯等离子体的特征。该激光器将成为中红外光谱区强相干热点场的高效纳米源，在中红外纳米显微镜、纳米光谱学、纳米光刻、光电信息处理等领域具有广泛的应用前景。
We propose a novel nanospaser that operates in the mid-infrared region and utilizes a nanopatch of graphene as its plasmonic core and a quantum-well cascade as its gain medium. This design takes advantage of the low optical losses in graphene resulting from its high electron mobility. The proposed quantum cascade graphene spaser generates optical fields with unprecedentedly high nanolocalization, which is characteristic of graphene plasmons. This spaser will be an efficient nanosource of intense and coherent hot-spot fields in the mid-infrared spectral region with potential widespread applications in mid-infrared nanoscopy, nanospectroscopy, nanolithography, and optoelectronic information processing.