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Effect of surrounding medium on the optical properties of a two layer silver film

机译:周围介质对两层银膜光学性能的影响

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The effect of surrounding medium on the optical properties of a two layer silver film are investigated using an analytical model. We varied the media before the first layer, between the two layers, and after the second layer. We find that the optical properties of the film is dominantly determined by the medium between the two layers. The resonance wavelength red shifts when the medium between the two layers is changed from vacuum to water and then glass. The media before the first layer and after the second layer have little effect on the spectra of the film when the thicknesses of the layers are larger than 40 nm.
机译:使用分析模型研究了周围介质对两层银膜光学特性的影响。我们在第一层之前,两层之间以及第二层之后改变介质。我们发现,膜的光学性质主要由两层之间的介质决定。当两层之间的介质从真空变为水然后变为玻璃时,共振波长红移。当层的厚度大于40nm时,第一层之前和第二层之后的介质对膜的光谱影响很小。

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