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arXiv 1408.6344physics.optics
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层状超材料点扩散函数的工程设计

Engineering the point spread function of layered metamaterials

Anna Pastuszczak, Marcin Stolarek, Rafal Kotynski

摘要:

层状金属-电介质超材料在频域和空间频域都具有滤波特性。设计其空间滤波响应是一种设计具有特定衍射特性的结构的方法,用于亚衍射成像,超准直或纳米级光学信号处理等应用。本文综述了这一领域的最新进展。我们还提出了一个数值优化框架分层超材料,基于进化算法的使用。使用Hoelder不等式获得的相似性的措施是适应构造的整体标准功能。分析了表面粗糙度对成像质量的影响。

英文摘要:

Layered metal-dielectric metamaterials have filtering properties both in the frequency domain and in the spatial frequency domain. Engineering their spatial filtering response is a way of designing structures with specific diffraction properties for such applications as sub-diffraction imaging, supercollimation, or optical signal processing at the nanoscale. In this paper we review the recent progress in this field. We also present a numerical optimization framework for layered metamaterials, based on the use of evolutionary algorithms. A measure of similarity obtained using Hoelder's inequality is adapted to construct the overall criterion function. We analyze the influence of surface roughness on the quality of imaging.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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