论文标题
在周期性极性介电材料的金字塔结构中，通过声子 - 光子共振实现的超大频带完美的吸收
Ultra-broad band perfect absorption realized by phonon-photon resonance in periodic polar dielectric material based pyramid structure
论文作者
论文摘要
在这项研究中，已经全面研究了由金字塔光栅结构组成的中红角超宽带完美吸收器。该结构在SIC的RESTSTRAHLEM带中运行，并且在表面声子共振（SPHR）的存在下，在10.25至10.85 $μm$之间观察到了完美的吸收。由于磁极的独立性，我们在PLC电路模型的帮助下解释了该结构的机制。通过研究不同波长的共振行为，我们通过修改几何形状来弥合连续的完美吸收带和11.05 $μm$（出现两个紧密的吸收带）中的连续完美吸收带和离散峰。吸收带已足够扩展。更重要的是，已经考虑了1-D和2-D周期结构，并且已经研究了不同的入射角和极化角的响应，并且可以实现全向和极化不敏感的结构，这可能是气象学中几种传感器应用的候选者。模拟是通过严格的耦合波法（RCWA）进行的。
In this research, a mid-infrared wide-angle ultra-broadband perfect absorber which composed of pyramid grating structure has been comprehensively studied. The structure was operated in the reststrahlem band of SiC and with the presence of surface phonon resonance(SPhR), the perfect absorption was observed in the region between 10.25 and 10.85 $μm$. We explain the mechanism of this structure with the help of PLC circuit model due to the independence of magnetic polaritons. More over, by studying the resonance behavior of different wavelength, we bridged the continuous perfect absorption band and the discret peak in 11.05 $μm$(emerge two close absorption band together) by modification of the geometry. The absorption band has been sufficiently broadened. More over, both 1-D and 2-D periodic structure has been considered and the response of different incident angles and polarized angles have been studied and a omnidirectional and polarization insensitive structure can be realized which may be a candidate of several sensor applications in meteorology. The simulation was conducted by the Rigorous Coupled Wave Method(RCWA).
