材料科学
光电子学
电介质
吸收(声学)
共发射极
层状结构
堆栈(抽象数据类型)
吸收带
红外线的
消散
光学
复合材料
计算机科学
热力学
物理
程序设计语言
作者
Ding Zhao,Lijun Meng,Hanmo Gong,Xingxing Chen,Yiting Chen,Min Yan,Qiang Li,Min Qiu
摘要
An ultra-narrow band absorber consisting of continuous silver and alumina films is investigated. Owing to Fabry–Pérot resonance and silver's inherent loss, an ultra-narrow spectral range of light can be entirely trapped in the structure. By varying thicknesses of metallic and dielectric films, absorption peak shifts in visible and near-infrared regions. When two such metal-insulator-metal stacks are cascaded, experimental results show that an ultra-narrow absorption bandwidth of 7 nm is achieved, though theoretical results give that of 2 nm. Features of high-efficiency and ultra-narrow band absorption have huge potential in optical filtering, thermal emitter design, etc.
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