Medvedev V V, Gubarev V M, Lee C J
J Opt Soc Am A Opt Image Sci Vis. 2018 Aug 1;35(8):1450-1456. doi: 10.1364/JOSAA.35.001450.
The absorption of electromagnetic radiation by a planar structure, consisting of a three-layer dielectric-metal-dielectric coating on a metal backreflector, is analyzed. The conditions for total absorption are derived. Our analysis shows that, in contrast with bi-layer structures, the calculated layer thicknesses are feasible to fabricate for any metal. The proposed absorber design is of potential use in infrared, terahertz, and longer wavelength detectors and for radiant energy harvesting devices.
分析了由金属背反射器上的三层介质-金属-介质涂层组成的平面结构对电磁辐射的吸收情况。推导了全吸收的条件。我们的分析表明，与双层结构不同，对于任何金属，计算出的层厚度在制造上都是可行的。所提出的吸收器设计在红外、太赫兹及更长波长探测器以及辐射能收集装置中具有潜在用途。
