一维金属介质光子带隙材料的光学特性（英文）

Optical characteristics of one dimensional metal-dielectric photonic band gap material

本文描述了由不同厚度的ITO和Ag层制成的一维金属介质光子带隙材料1D M-D PBG的光学透射和反射特性。研究发现,单元尺寸小于80 nm的金属结构和较小的金属分数会导致光学透射率的提高。对于大于80 nm的单元尺寸,在可见光的低频和高频的频谱范围内反射率都相应增强。这是由于一种特殊结构和等离子体的带隙的作用。此外,在两个范围内的反射随着增加银膜厚度的增加而提高和扩大。结构引起的反射光谱随着单位尺寸的增大而增大,并且由于等离子体光子带隙的反射超出光学范围。研究结果对1D M-D PBG光学滤波器的设计有一定的参考价值。

This paper describes the optical transmittance and reflection of one dimensional metal-dielectric photonic-band gap material(1D M-D PBG),which is made of different thicknesses ITO and Ag layers.It is found that structures with a unit size below 80 nm and a smaller metal fraction leads to improvement of optical transmittance.For unit sizes larger than 80 nm,the reflection at the shorter and longer wavelengths increases.This is due to the generation of a structural and plasmonic band gap.In addition,the reflection in both ranges increases and broadens by increasing Ag films thicknesses.The reflection spectrum induced by structure shifts towards longer wavelength as a result of unit size increasing and the reflection due to plasmonic band gap piles beyond to optical range.The results are very useful for optical filter of 1D M-D PBG design.