Graphene-based perfect optical absorbers harnessing guided mode resonances
Graphene-based perfect optical absorbers harnessing guided mode resonances
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DOI：
10.1364/oe.23.021032
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发表时间：
2015-08-10
期刊：
影响因子：
3.8
通讯作者：
D'Orazio, A.
中科院分区：
文献类型：
--
作者：
Grande, M.;Vincenti, M. A.;D'Orazio, A.
我们研究了基于石墨烯的光吸收剂，它们利用导模共振（GMR），在几纳米的带宽（在可见光和近红外范围内）内实现理论上完美的吸收，单层石墨烯吸收增加了40倍。我们分析了几何参数对吸收率和斜入射角响应的影响。最后，我们实验验证了理论预测的一维，介电光栅附近放置一个金属或介质镜，从而实现了很好的数值预测和实验结果之间的协议。(C)2015美国光学学会
We investigate graphene-based optical absorbers that exploit guided mode resonances (GMRs) attaining theoretically perfect absorption over a bandwidth of few nanometers (over the visible and near-infrared ranges) with a 40-fold increase of the monolayer graphene absorption. We analyze the influence of the geometrical parameters on the absorption rate and the angular response for oblique incidence. Finally, we experimentally verify the theoretical predictions in a one-dimensional, dielectric grating by placing it near either a metallic or a dielectric mirror, thus achieving very good agreement between numerical predictions and experimental results. (C) 2015 Optical Society of America