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Wide-angle absorption of visible light from simple bilayers

机译：来自简单双层的可见光的广角吸收

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摘要

Color-selective absorption of light is a very significant operation used in numerous applications, from photonic sensing and switching to optical signal modulation and energy harnessing. We demonstrate angle-insensitive and polarization-independent absorption by thin bilayers comprising ordinary bulk media: dielectrics, semiconductors, and metals. Several highly efficient designs for each color of the visible spectrum are reported, and their internal fields' distributions reveal the resonance mechanism of absorption. The proposed bilayer components are realizable, since various physical or chemical deposition methods can be used for their effective fabrication. The absorption process is found to exhibit endurance with respect to the longitudinal dimension of the planar structure, which means that the same designs could be successfully utilized in non-planar configurations composed of arbitrary shapes. (C) 2017 Optical Society of America
机译：光的颜色选择性吸收是在许多应用中使用的非常重要的操作，从光子感测和切换到光信号调制和能量束缚。 我们展示了包含普通批量介质的薄双层的角度不敏感和偏振无关的吸收：电介质，半导体和金属。 报告了几种可见光谱的每种颜色的高效设计，其内部场的分布显示了吸收的共振机制。 所提出的双层组分可实现，因为各种物理或化学沉积方法可用于其有效的制造。 发现吸收过程具有相对于平面结构的纵向尺寸的耐久性，这意味着可以在由任意形状组成的非平面配置中成功地利用相同的设计。 （c）2017年光学学会

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