Focusing surface plasmons with a plasmonic lens
Focusing surface plasmons with a plasmonic lens
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DOI：
10.1021/nl051013j
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发表时间：
2005-09-01
期刊：
影响因子：
10.8
通讯作者：
Zhang, X
中科院分区：
文献类型：
--
作者：
Liu, ZW;Steele, JM;Zhang, X
我们报道了表面等离子体激元的聚焦圆形和椭圆形结构研磨成光学厚金属膜或等离子体透镜。给出了电磁近场的理论和实验数据。近场映射实验使用近场扫描光学显微镜和等离子体光刻。我们发现等离子体透镜的焦点处的强度随着尺寸而增加。
We report the focusing of surface plasmon polaritons by circular and elliptical structures milled into optically thick metallic films or plasmonic lenses. Both theoretical and experimental data for the electromagnetic nearfield is presented. The nearfield is mapped experimentally using nearfield scanning optical microscopy and plasmonic lithography. We find that the intensity at the focal points of the plasmonic lenses increases with size.