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Properties of mixed metal-dielectric nanogratings for application in resonant absorption, sensing, and display

机译：混合金属介电纳米光栅在共振吸收，传感和显示中的应用

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摘要

We treat fundamental resonance effects in hybridized metal-dielectric elements that may find applications in absorption, sensing, and displays. The hybrid structures support guided-mode resonance (GMR) and surface plasmon resonance (SPR) operating independently or in unison. Numerical simulations of periodic resonant films coated in gold that effectively combine principles of both resonance effects show viability of absorbers with equalized spectra and hybrid waveguides. The experimentally measured spectra show qualitative agreement with theoretical models. We introduce a hybrid GMR/SPR refractive-index sensor consisting of a thin aluminum film integrated with a subwavelength silicon-dioxide grating. The sensor operates between the Rayleigh wavelengths of the cover and the substrate. A GMR is excited by TE-polar-ized light and is subsequently attenuated by the Rayleigh anomaly as the cover index increases. In transverse-magnetic-polarized light, it operates as a Rayleigh sensor with sharp spectral features that would be easily monitored with a spectrum analyzer. As a final device example, we present simulation results pertaining to a one-dimensional color filter utilizing SPR, GMR, and the Rayleigh anomaly and convert it into a polarization insensitive two-dimensional device. With dual periods along orthogonal directions, two resonant peaks are induced within the visible spectrum for unpolarized input light rendering a color-mixing effect. The output color of the dual pixel is tunable with the input polarization state.
机译：我们在混合金属电介质元件中处理基本的共振效应，这可能会在吸收，感测和显示中找到应用。混合结构支持独立运行或同时运行的引导模式共振（GMR）和表面等离振子共振（SPR）。有效地结合了两种共振效应原理的涂有金的周期性共振膜的数值模拟显示了具有均等光谱的吸收体和混合波导的可行性。实验测得的光谱与理论模型显示出定性的一致性。我们介绍了一种混合GMR / SPR折射率传感器，该传感器由与亚波长二氧化硅光栅集成的铝薄膜组成。传感器在盖子和基板的瑞利波长之间工作。 GMR被TE偏振光激发，随后随着覆盖指数的增加而被瑞利异常衰减。在横向磁偏振光中，它用作具有清晰光谱特征的瑞利传感器，可以通过频谱分析仪轻松监控。作为最终的设备示例，我们介绍了与利用SPR，GMR和Rayleigh异常的一维滤色器有关的仿真结果，并将其转换为对偏振不敏感的二维设备。通过沿正交方向的双周期，在可见光谱内会感应出两个共振峰，从而产生颜色混合效果的非偏振输入光。双像素的输出颜色可根据输入偏振态进行调整。

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  • 来源
    《Optical engineering》 |2017年第12期|121905.1-121905.10|共10页
  • 作者

    Alexander L. Fannin; Brett R. Wenner; Jeffery W. Allen; Monica S. Alien; Robert Magnusson;

  • 作者单位

    University of Texas at Arlington, Department of Electrical Engineering, Arlington, Texas, United States;

    Wright-Patterson Air Force Base, Air Force Research Laboratory, Sensors Directorate, Dayton, Ohio, United States;

    Eglin AFB, Air Force Research Laboratory, Munitions Directorate, Valparaiso, Florida, United States;

    Eglin AFB, Air Force Research Laboratory, Munitions Directorate, Valparaiso, Florida, United States;

    University of Texas at Arlington, Department of Electrical Engineering, Arlington, Texas, United States;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    guided-mode resonance; surface plasmon resonance; subwavelength structures; absorption; polarization;

    机译：导模共振表面等离子体共振;亚波长结构;吸收偏振;

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