Photoluminescence from gold nanoplates induced by near-field two-photon absorption
Photoluminescence from gold nanoplates induced by near-field two-photon absorption
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DOI：
10.1063/1.2161568
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发表时间：
2006-01-09
影响因子：
4
通讯作者：
Okamoto, H
中科院分区：
文献类型：
--
作者：
Imura, K;Nagahara, T;Okamoto, H
利用有孔扫描近场光学显微镜研究了单金纳米片的双光子诱导光致发光（PL）特性。纳米片显示出比纳米棒强得多的PL。近场光致发光图像显示出特有的空间特征，这取决于入射偏振。这些PL图像是在良好的协议与计算的空间分布的电场相邻的粒子在激发波长。我们将观察到的图像归因于等离子体激元模式的空间特性。
We have investigated two-photon-induced photoluminescence (PL) properties of single gold nanoplates by using an apertured scanning near-field optical microscope. The nanoplates show PL much stronger than nanorods. The near-field PL images show characteristic spatial features, which depend on the incident polarization. These PL images are in good agreement with the calculated spatial distribution of the electric fields adjacent to the particles at the excitation wavelength. We attribute the observed images to spatial characteristics of plasmon modes.