在实验上研究了不同材料构成的一维窄带光子晶体带隙特性,采用电子束热蒸发技术,制备了一系列可见光范围内的窄带光子晶体反射镜。实验结果表明:高低折射率比值能够影响光子晶体对相应频率光的抑制能力。折射率比值恒定时,随周期数的增多,最大反射率增大,带隙宽度减小;对于折射率比值不同的光子晶体,折射率比值越小,带隙越窄,达到高反射率所需的周期数目越多。通过构建异质结构光子晶体,显著缩小了光子晶体带隙,并使其在短周期内实现了窄帯高反射率。 The bandgap properties of one-dimensional narrow-band photonic crystals composed of different materials were experimentally studied. A series of narrowband photonic crystal mirrors in the visible range were prepared by electron beam thermal evaporation. The experimental results show that the ratio of high and low refractive index can affect the ability of photonic crystal to suppress the corresponding frequency light. When the refractive index ratio is constant, with the increase of the number of cycles, the maximum reflectance increases and the band gap width decreases. For photonic crystals with different refractive index ratios, the smaller the refractive index ratio, the narrower the band gap and the high reflectance required The more the number of cycles. By constructing a heterostructure photonic crystal, the bandgap of the photonic crystal is significantly reduced and the narrow 帯 high reflectivity is achieved in a short period.