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Ultra-wideband perfect reflection and tunneling by all-dielectric metamaterials

机译:全电介质超材料的超宽带完美反射和隧道

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摘要

All-dielectric metamaterials are a promising low-loss alternative to plasmonic metamaterials for near-infrared perfect reflection, but the working bandwidth is still limited. Here we propose an ultra-wideband all-dielectric metamaterial perfect reflector that has a compact structure consisting of the subwavelength high-index grating, connection layer, and multilayer stack. Such a perfect reflector combines the advantages of quarter-wave design and resonant leaky mode, and covers an extremely wide wavelength range from 966 to 2203 nm under the normal incidence of transverse magnetic wave. By engineering the connection layer, the reflection band can be split with an ultra-narrowband tunneling of light transmission. These achievements demonstrate the promising potential of all-dielectric metamaterials as ultra-wideband reflectors for extensive applications in optical devices and systems. (C) 2021 Optical Society of America
机译:对于近红外完美反射,全介质超材料是等离子体超材料的低损耗替代品,但其工作带宽仍然有限。在这里,我们提出了一种超宽带全介质超材料完美反射器,其结构紧凑,由亚波长高折射率光栅、连接层和多层叠层组成。这种完美的反射器结合了四分之一波设计和共振漏模的优点,在横向磁波的垂直入射下覆盖了从966到2203 nm的极宽波长范围。通过设计连接层,反射带可以通过光传输的超窄带隧道进行分裂。这些成就证明了全介质超材料作为超宽带反射器在光学器件和系统中的广泛应用前景。(2021)美国光学学会

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  • 来源
    《Optics Letters》 |2021年第4期|共4页
  • 作者单位

    Xiamen Univ Inst Electromagnet &

    Acoust Xiamen 361005 Peoples R China;

    Xiamen Univ Inst Electromagnet &

    Acoust Xiamen 361005 Peoples R China;

    Chinese Acad Sci Changchun Inst Opt Fine Mech &

    Phys State Key Lab Appl Opt Changchun 130033 Peoples R China;

    Xiamen Univ Inst Electromagnet &

    Acoust Xiamen 361005 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 计量学;光学;
  • 关键词

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