首页> 外文期刊>Journal of the Optical Society of America, B. Optical Physics >Three-dimensional finite-difference time-domain study of enhanced second-harmonic generation at the end of a apertureless scanning near-field optical microscope metal tip
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Three-dimensional finite-difference time-domain study of enhanced second-harmonic generation at the end of a apertureless scanning near-field optical microscope metal tip

机译:无孔扫描近场光学显微镜金属尖端末端增强二次谐波产生的三维有限差分时域研究

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摘要

We use a finite-difference time-domain method to model the experiments of second-harmonic generation at the apex of a metallic tip used in a scanning near-field optical microscope. We calculate the linear diffracted field and the second-harmonic field. In the near field we compare the confinement of the two fields around the apex. In the far field we determine the spectral responses versus the sample tip coupling. © 2005 Optical Society of America.
机译:我们使用时域有限差分方法来模拟在扫描近场光学显微镜中使用的金属尖端的顶点产生二次谐波的实验。我们计算了线性衍射场和二次谐波场。在近场中,我们比较顶点周围两个场的限制。在远场中,我们确定光谱响应与样品尖端耦合的关系。 &复制; 2005年美国眼镜学会。

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