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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 bandgap characteristics of one-dimensional Ag / MgF2 photonic crystals were investigated by using transfer matrix method. The one-dimensional photonic crystal structure model composed of Ag and MgF2 was constructed. Based on the model, the effects of filling ratio, periodic number of layers, incidence angle and other parameters on the band gap structure of photonic crystal were discussed in detail. . The results show that compared with the results of other metal photonic crystals, the metal photonic crystal with the structure has high reflectivity photonic bandgap in the ultraviolet region and belongs to the one-dimensional photonic crystal with incomplete bandgap, which is suitable for making the ultraviolet region Optical mirror.