Giannattasio Armando, Hooper Ian, Barnes William
Opt Express. 2004 Nov 29;12(24):5881-6. doi: 10.1364/opex.12.005881.
We report results of measurements and calculations that help to clarify the role of surface plasmon-polariton modes in the transmission of light through thin continuous films of silver. Our experimental data show that there is an optimum silver film thickness for which transmission is maximal. We offer an explanation of this phenomenon in terms of competition between increasing absorption in the metal and increasing optical field-enhancement due to surface plasmon-polariton excitation as the metal film thickness is increased. We find no need to invoke the regeneration of evanescent waves as has recently been suggested.
我们报告了测量和计算结果，这些结果有助于阐明表面等离激元 - 极化激元模式在光透过连续银薄膜传输过程中的作用。我们的实验数据表明，存在一个使传输最大化的最佳银膜厚度。我们根据随着金属膜厚度增加，金属中吸收增加与表面等离激元 - 极化激元激发导致的光场增强增加之间的竞争，对这一现象给出了解释。我们发现无需像最近所建议的那样援引倏逝波的再生。
