论文标题
双波段金属 - 金属 - 金质表面吸收器
Dual-Band Metal-Insulator-Metasurface Absorber
论文作者
论文摘要
我们探索了一种金属 - 绝缘子 - 金质面结构，该结构在可见的和红外线中表现出双带吸收，几乎具有完美的吸光度。我们证明了双峰吸光度的存在是由于激发了繁殖表面等离子体和局部表面等离子体模式。我们进一步利用激发的退化繁殖表面等离子体来增强位于元图顶部的发射极的荧光发射。这是通过工程化的元表面来实现的，该元表面激发了一个偏离模式，其共振吸收带接近荧光材料的发射波长。这种情况有助于通过产生其他电子构型来提高发射极的激发速率，并在耦合到此类金属 - 隔离剂 - 质量面结构时产生其他电子构型。这种方法在辐射工程技术方面具有相关的潜力。
We explored a metal-insulator-metasurface structure exhibiting dual-band absorption in the visible and infrared regions with almost perfect absorbance. We demonstrated that the existence of the dual peak absorbance is due to the excitation of propagating surface plasmon and localized surface plasmon mode. We further utilized the excited degenerate propagating surface plasmon to enhance the fluorescence emission of an emitter located on top of the metasurface. This was accomplished by engineering a metasurface that excites a degenerate mode with resonance absorption bands close to the emission wavelength of fluorescent material. This condition helps to increase the rate of excitation and emission of an emitter by generating additional electron configurations when coupled to such metal-insulator-metasurface structures. This approach offers relevant potential in radiative engineering techniques.
