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Characterizations of reconfigurable infrared metamaterial absorbers

机译:可重新配置红外超材料吸收剂的特征

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摘要

We propose four types of metamaterial absorbers to have tunable absorption resonance and polarization-dependent/independent, single-band, and dual-band switch characterizations. By tailoring four types of MAs with different heights between top and bottom metal layers, absorption resonance can be modified at a 5.92 mu m wavelength, and the absorption intensity can be attenuated gradually. These characteristics of MA devices can be potentially used in a variable optical attenuator (VOA). By changing the distance between the top unit cells of four devices, the resonances can be tuned in the range of a 1.74 mu m wavelength with an exponential relationship. All absorption intensities can be maintained over 90%. Furthermore, MA devices also possess single-band and dual-band switch characterizations by controlling the polarization angle of incident light, which helps the MA to have the potential in a multifunctional switch. By comparing the range of switch ratios, it can be spanned 1.76 for dual-band switch function. This Letter provides a strategy to open an avenue for VOA, absorber, detector, sensor, and switch applications in the IR wavelength range. (C) 2018 Optical Society of America
机译:我们提出了四种类型的超材料吸收器,具有可调谐吸收谐振和偏振依赖性/独立,单带和双频开关特性。通过在顶部和底部金属层之间具有不同高度的四种类型的MA,可以在5.92μm波长下进行吸收共振,并且可以逐渐减弱吸收强度。 MA器件的这些特性可以潜在地用于可变光学衰减器(VOA)。通过改变四个装置的顶部单元电池之间的距离,可以以指数关系在1.74μm波长的范围内调谐谐振。所有吸收强度都可以保持超过90%。此外,MA器件还具有通过控制入射光的偏振角来具有单带和双频开关特性,这有助于MA在多功能开关中具有电势。通过比较交换比率范围,可以跨越1.76进行双频开关功能。这封信提供了开设VOA,吸收器,探测器,传感器和IR波长范围内的开关应用的策略。 (c)2018年光学学会

著录项

  • 来源
    《Optics Letters》 |2018年第19期|共4页
  • 作者

    Xu Ruijia; Lin Yu-Sheng;

  • 作者单位

    Sun Yat Sen Univ Sch Elect &

    Informat Technol State Key Lab Optoelect Mat &

    Technol Guangzhou 510275 Guangdong Peoples R China;

    Sun Yat Sen Univ Sch Elect &

    Informat Technol State Key Lab Optoelect Mat &

    Technol Guangzhou 510275 Guangdong Peoples R China;

  • 收录信息
  • 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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