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arXiv physics/0608116physics.optics
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亚波长结构银膜表面产生的表面波分析

Analysis of surface waves generated on subwavelength-structured silver films

G. Gay, O. Alloschery, J. Weiner, H. J. Lezec, C. O'Dwyer, M. Sukharev, T. Seideman

摘要:

使用透射电子显微镜(TEM)分析subwavlength结构的银膜和有限差分时域(FDTD)的光学响应的平面波激发的数值模拟的物理化学表面特性,我们报告的起源和性质的持久性表面波产生的一个单一的狭缝槽图案和最近测量的远场光学干涉。表面分析表明,银膜是免费的可检测的氧化物或硫化物污染物,和数值模拟显示与以前报道的结果非常好的协议。

英文摘要:

Using transmission electron microscopy (TEM) to analyse the physical-chemical surface properties of subwavlength structured silver films and finite-difference time-domain (FDTD) numerical simulations of the optical response of these structures to plane-wave excitation, we report on the origin and nature of the persistent surface waves generated by a single slit-groove motif and recently measured by far-field optical interferometry. The surface analysis shows that the silver films are free of detectable oxide or sulfide contaminants, and the numerical simulations show very good agreement with the results previously reported.

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