Multispectral metamaterial absorber
Multispectral metamaterial absorber
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DOI：
10.1364/ol.39.001227
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发表时间：
2014-03-01
期刊：
影响因子：
3.6
通讯作者：
Cumming, D. R. S.
中科院分区：
文献类型：
--
作者：
Grant, J.;McCrindle, I. J. H.;Cumming, D. R. S.
我们提出了多光谱超材料吸收器（MSMMA）的仿真、实现和测量，并表明我们可以实现一个工作在中红外和太赫兹（THz）波段的简单吸收器结构。通过将红外超材料吸收层嵌入到标准太赫兹超材料吸收层中，在4.3 μ m波长处产生窄带共振，该共振是对109 μ m （2.75 THz）波段的太赫兹超材料吸收共振的补充。通过描述第二个设备，我们展示了我们的MSMMA固有的可扩展性和多功能性，通过改变红外吸收器的几何形状来调节mm诱导的红外吸收峰频率。这样的MSMMA可以与合适的传感器耦合，形成焦平面阵列，实现多光谱成像。(C) 2014年美国光学学会
We present the simulation, implementation, and measurement of a multispectral metamaterial absorber (MSMMA) and show that we can realize a simple absorber structure that operates in the mid-IR and terahertz (THz) bands. By embedding an IR metamaterial absorber layer into a standard THz metamaterial absorber stack, a narrowband resonance is induced at a wavelength of 4.3 mu m. This resonance is in addition to the THz metamaterial absorption resonance at 109 mu m (2.75 THz). We demonstrate the inherent scalability and versatility of our MSMMA by describing a second device whereby the MM-induced IR absorption peak frequency is tuned by varying the IR absorber geometry. Such a MSMMA could be coupled with a suitable sensor and formed into a focal plane array, enabling multispectral imaging. (C) 2014 Optical Society of America