Imaging three-dimensional light propagation through periodic nanohole arrays using scanning aperture microscopy
Imaging three-dimensional light propagation through periodic nanohole arrays using scanning aperture microscopy
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DOI：
10.1063/1.2783177
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发表时间：
2007-09-03
影响因子：
4
通讯作者：
Lakowicza, Joseph R.
中科院分区：
文献类型：
--
作者：
Chowdhury, Mustafa H.;Catchmark, Jeffrey M.;Lakowicza, Joseph R.
作者介绍了一种利用扫描探针对通过周期性纳米孔传输的光进行三维成像的技术，用于光学切片显微镜。对于4x4纳米孔阵列，透射光沿传播轴显示强度调制，最大强度发生在表面以上450 μ m处。传播场发散度低，表明阵列产生了光束效应。在距离表面25 μ m的距离内，他们观察到从单个纳米孔传播的光的亚波长限制。因此，这项技术可以潜在地用于绘制传播光的3D分布，具有高空间分辨率。
The authors introduce a technique for three-dimensional (3D) imaging of the light transmitted through periodic nanoapertures using a scanning probe to perform optical sectioning microscopy. For a 4x4 nanohole array, the transmitted light displays intensity modulations along the propagation axis, with the maximum intensity occurring at 450 mu m above the surface. The propagating fields show low divergence, suggesting a beaming effect induced by the array. At distances within 25 mu m from the surface, they observe subwavelength confinement of light propagating from the individual nanoholes. Hence, this technique can potentially be used to map the 3D distribution of propagating light, with high spatial resolution.