金属光栅透射的增强和抑制：光谱响应的工程设计
Enhancement and Inhibition of Transmission from metal gratings: Engineering the Spectral Response
摘要：
本文系统地分析了金属薄膜中狭缝阵列的光学特性。几何和色散特性的详尽调查揭示了这些结构的共振特性，包括表面波的作用及其与透射谱中特征的关系。虽然增强的透射窗口显著地由狭缝内局部化的纵向共振主导，但是周期性引入了可以增强或抑制光透射的横向共振。因此，我们说明了有趣的相互作用制度之间的纵向和横向共振，其中两种模式杂交导致形成的光子带隙光谱。
英文摘要：
We present a systematic analysis of the optical properties of slit arrays in metal films. An exhaustive investigation of geometrical and dispersive properties reveals the resonance features of these structures, including the role of surface waves and their relationship with features in the transmission spectrum. Although enhanced transmission windows are significantly dominated by the longitudinal resonances localized inside the slits, the periodicity introduces transverse resonances that can either enhance or inhibit light transmission. We thus illustrate the intriguing interaction regime between longitudinal and transverse resonances, where the two modes hybridize leading to the formation of a photonic band gap spectrum.
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