Visibility of plasmonic particles embedded in transparent materials
Visibility of plasmonic particles embedded in transparent materials
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嵌入透明材料中的等离子体粒子的可见性
DOI：
10.1016/j.optcom.2012.11.033
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发表时间：
2013
影响因子：
2.4
通讯作者：
E. Dujardin
中科院分区：
文献类型：
--
作者：
A. Teulle;R. Marty;C. Girard;A. Arbouet;E. Dujardin
最近，几个实验表明，它是可能的，通过聚合物薄膜的光致结构化，以可视化的光学近场周围产生的个别等离子体粒子。在这次交流中，我们表明，通过将入射波长调节到等离子体激元频率附近，可以随意控制粒子的可见性，直至准不可见。这种现象发生在粒子极化率的真实的部分显示符号变化时。这种简单的光谱控制可见度是更经典的空间控制可见度方法的替代方案。
Recently, several experiments have shown that it is possible to visualize the optical near-field generated around individual plasmonic particles through the photo-induced structuration of polymer films. In this communication, we show that the particle visibility can be controlled at will down to the quasi-invisibility by tuning the incident wavelength around the plasmon frequency. This phenomenon occurs when the real part of the particle polarizability displays a sign change. This simple spectrally controlled visibility is an alternative to the more classical spatially controlled visibility approach.