Broadband plasmonic half-wave plates in reflection
Broadband plasmonic half-wave plates in reflection
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DOI：
10.1364/ol.38.000513
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发表时间：
2013-02-15
期刊：
影响因子：
3.6
通讯作者：
Bozhevolnyi, Sergey I.
中科院分区：
文献类型：
--
作者：
Pors, Anders;Nielsen, Michael G.;Bozhevolnyi, Sergey I.
我们通过数值模拟和实验证明，金属 - 绝缘体 - 金属结构（其中顶部金属层由纳米砖的周期性排列组成，从而支持间隙表面等离子体共振）可被设计用作反射型宽带半波片。使用金作为金属，在近红外波段构建的波片显示出可扩展性，带宽约为设计波长的20%，理论反射率高于85%，而实验测量的反射率约为50%。（C）2013美国光学学会
We demonstrate, both numerically and experimentally, that metal-insulator-metal configurations in which the top metal layer consists of a periodic arrangement of nanobricks, thus supporting gap-surface plasmon resonances, can be designed to function as reflective broadband half-wave plates. Using gold as the metal, the constructed wave plates in the near-infrared regime show scalability, bandwidth of similar to 20% of the design wavelength, and theoretical reflectivity above 85%, while a reflectivity of similar to 50% is experimentally measured. (C) 2013 Optical Society of America