为了设计宽带光吸收器件,构建了一个由石墨烯超材料层、空气层和金属层组成的复合结构模型。推导其传输矩阵公式,并利用它计算结构的传输特性。结果表明,通过调节结构参数,可以实现在高吸收率的条件下波长带宽与角度带宽的同时扩展。入射角为π/4时,在入射波长0.1~6.0μm内,吸收率均达到0.8以上。入射波长为3.5μm时,入射角在-70°~70°的范围内吸收率可以达到0.9以上。 In order to design a broadband light-absorbing device, a composite structure model consisting of a graphene meta-material layer, an air layer and a metal layer was constructed. Derive its transfer matrix formula, and use it to calculate the transmission characteristics of the structure. The results show that by adjusting the structural parameters, the wavelength bandwidth and angular bandwidth can be expanded simultaneously under high absorption rate. When the incident angle is π / 4, the absorption rate reaches 0.8 or more at the incident wavelength of 0.1 ~ 6.0μm. When the incident wavelength is 3.5 μm, the absorption rate in the range of -70 ° to 70 ° can reach 0.9 or more.