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首页> 外文期刊>Optical engineering >Highly efficient subwavelength imaging in mid-IR range using high dielectric hexagonal lattice photonic crystals
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Highly efficient subwavelength imaging in mid-IR range using high dielectric hexagonal lattice photonic crystals

机译：使用高介电六角形晶格光子晶体在中红外范围内进行高效亚波长成像

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摘要

Two-dimensional hole-type hexagonal lattice photonic crystals with low and high dielectric materials have been investigated for the aim of achieving all-angle negative refraction for subwavelength imaging. Structures composed of Si (ε_(Si) = 12 at IR) and PbTe (ε_(pbTe) = 36 at mid-IR) have been regarded, as sample materials. All-angle negative refraction has been achieved for the TM polarization in the second band under the light line in a broad bandwidth of 26% and 31% for low and high dielectric materials, respectively. The optimized radii for low and high dielectric PCs equal to 0.31a and 0.35a and provide the spatial full width at half maximum of 0.37λ and 0.38λ, respectively. The structures present TE gap in the operating wavelength range, and this feature of the structures can be applied to design polarization beam splitters in integrated space division multiplexing.
机译：为了实现亚波长成像的全角度负折射，已经研究了具有低和高介电材料的二维孔型六方晶格光子晶体。作为样品材料，已经考虑了由Si（IR处的ε_（Si）= 12）和PbTe（IR中处的ε_（pbTe）= 36）组成的结构。对于低和高介电材料，分别在26％和31％的宽带宽中，在光线下第二个波段的TM偏振已实现了全角度负折射。低电介质PC和高电介质PC的优化半径分别等于0.31a和0.35a，并提供半高处的空间全宽，分别为0.37λ和0.38λ。该结构在工作波长范围内呈现TE间隙，并且该结构的这一特征可以应用于集成空分复用中的偏振分束器设计。

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  • 来源
    《Optical engineering》 |2019年第6期|067108.1-067108.6|共6页
  • 作者

    Mansour Zaremanesh; Mina Noori;

  • 作者单位

    Sahand University of Technology, Department of Electrical Engineering, Tabriz, Iran,Sahand University of Technology, Nano-Optics and Photonics Research Lab, Tabriz, Iran;

    Sahand University of Technology, Department of Electrical Engineering, Tabriz, Iran,Sahand University of Technology, Nano-Optics and Photonics Research Lab, Tabriz, Iran;

  • 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

    all-angle; negative refraction; subwavelength imaging; mid-infrared;

    机译：全角度负折射亚波长成像中红外;

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