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arXiv physics/0611056physics.optics
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纳米孔阵列的光聚焦

Focusing of Light by a Nano-Hole Array

Fu Min Huang, Yifang Chen, F. Javier Garcia de Abajo, Nikolay Zheludev

摘要:

我们展示了一个概念上的新机制,亚波长聚焦在光学频率的基础上使用的纳米孔准周期阵列的金属屏幕。使用660 nm的相干照明和扫描近场光学显微镜,在距离阵列约12.5 mkm处观察到约290 nm的“热点”。在更靠近阵列平面的地方观察到腰部约200 nm的甚至更小的热点。

英文摘要:

We demonstrate a conceptually new mechanism for sub-wavelength focusing at optical frequencies based upon the use of nano-hole quasi-periodic arrays in metal screens. Using coherent illumination at 660 nm and scanning near-field optical microscopy, ~290 nm "hot spots", were observed at a distance of ~12.5 mkm from the array. Even smaller hot-spots of about 200 nm in waist were observed closer to the plane of the array.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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