紫外线波段一维Ag/MgF_2光子特性的理论研究

Theoretical study on the photonic properties of one-dimensional Ag/MgF_2 photonic crystal for ultraviolet spectrum

利用传输矩阵方法对一维Ag/MgF2光子晶体的带隙特性进行了研究。构建了由Ag和MgF2组成的一维光子晶体结构模型,以此模型为基础详细讨论了填充比、周期层数、入射角等参数对光子晶体带隙结构的影响,并讨论了造成吸收的原因。研究结果表明,与其他金属光子晶体的研究结果相比,该结构的金属光子晶体在紫外线波段具有高反射率的光子带隙,属于不完全带隙的一维光子晶体,适用于制作紫外线波段的光学反射镜。

The characteristics of the band gap of one-dimensional photonic crystal Ag/MgF2 are studied with Transfer Matrix Method （TMM）. One-dimensional model consisting of Ag and MgF2 is proposed. In this model,the influence of PBG by the periodicity N,the incidence angles and filling ratio is discussed. Cause of absorption is discussed. The results show that,compared with other studies for metal photonic crystal,such a metal photonic crystal structure in the ultraviolet with photonic band gap is expected to be used in mirror of broadband optical.