Coherent control of plasmonic nanoantennas using optical eigenmodes.

Coherent control of plasmonic nanoantennas using optical eigenmodes.
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DOI:
10.1038/srep01808
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发表时间:
2013
期刊:
影响因子:
4.6
通讯作者:
Mazilu, Michael
Mazilu, Michael
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Kosmeier, Sebastian;De Luca, Anna Chiara;Zolotovskaya, Svetlana;Di Falco, Andrea;Dholakia, Kishan;Mazilu, Michael

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在过去的十年里,在各种设计的纳米等离子体结构附近出现了电磁场的亚波长聚焦。然而,一个共同的问题是场的空间限制,这大多是不灵活的,并且局限于由纳米结构的几何形状确定的固定位置,这阻碍了许多应用。在这里,我们借助于光学本征模的原理,从数值和实验上相干地解决了从给定阵列中选择的单个和多个等离子体纳米结构。通过将光场分解为特定于纳米结构的光学本征模,我们创建了对入射光的亚波长、选择性和动态控制。利用这种方法对等离子体纳米天线的相干控制显示出几乎为零的串扰。这种方法即使在存在大的传输像差的情况下也是适用的,例如存在于全息漫射器和多模光纤中。该方法提出了一种用光来寻址等离子体纳米结构的范式转变。
The last decade has seen subwavelength focusing of the electromagnetic field in the proximity of nanoplasmonic structures with various designs. However, a shared issue is the spatial confinement of the field, which is mostly inflexible and limited to fixed locations determined by the geometry of the nanostructures, which hampers many applications. Here, we coherently address numerically and experimentally single and multiple plasmonic nanostructures chosen from a given array, resorting to the principle of optical eigenmodes. By decomposing the light field into optical eigenmodes, specifically tailored to the nanostructure, we create a subwavelength, selective and dynamic control of the incident light. The coherent control of plasmonic nanoantennas using this approach shows an almost zero crosstalk. This approach is applicable even in the presence of large transmission aberrations, such as present in holographic diffusers and multimode fibres. The method presents a paradigm shift for the addressing of plasmonic nanostructures by light.
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期刊: JOURNAL OF OPTICS
影响因子: 2.1
作者:
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