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首页> 外文期刊>Nanotechnology >Generation of tailored terahertz waves from monolithic integrated metamaterials onto spintronic terahertz emitters
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Generation of tailored terahertz waves from monolithic integrated metamaterials onto spintronic terahertz emitters

机译：从单片集成的超材料中的一代由单片综合的超级材料发电到Spintronic Terahtz发射器上

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摘要

Recently emerging spintronic terahertz (THz) emitters, featuring many appreciable merits such as low-cost, high efficiency, ultrabroadband, and ease of integration, offer multifaceted capabilities not only in understanding the fundamental ultrafast magnetism physics but also for exploring multifarious practical applications. Integration of various flexible and tunable functions at the source such as polarization manipulation, amplitude tailoring, phase modulation, and radiation beam steering with the spintronic THz emitters and their derivatives can yield more compact and elegant devices. Here, we demonstrate a monolithic metamaterial integrated onto a W/CoFeB/Pt THz nanoemitter for a purpose-designed functionality of the electromagnetically induced transparency analog. Through elaborate engineering the asymmetry degree and geometric parameters of the metamaterial structure, we successfully verified the feasibility of monolithic modulations for the radiated THz waves. The integrated device was eventually compared with a set of stand-alone metamaterial positioning scenarios, and the negligible frequency difference between two of the positioning schemes further manifests almost an ideal realization of the proposed monolithic integrated metamaterial device with a spintronic THz emitter. We believe that such adaptable and scalable devices may make valuable contributions to the designable spintronic THz devices with pre-shaping THz waves and enable chip-scale spintronic THz optics, sensing, and imaging.
机译：最近出现的自旋电子学太赫兹（THz）发射器具有许多显著的优点，如低成本、高效率、超宽带和易于集成，不仅在理解基本的超快磁性物理方面，而且在探索各种实际应用方面，提供了多方面的能力。将各种灵活且可调谐的功能（如偏振操纵、振幅调整、相位调制和辐射束控制）与自旋电子太赫兹发射器及其衍生物集成在一起，可以产生更紧凑、更优雅的设备。在这里，我们展示了一种集成在W/CoFeB/Pt-THz纳米发射器上的单片超材料，用于电磁感应透明模拟的功能性设计。通过对超材料结构的非对称度和几何参数的精细工程设计，我们成功地验证了对辐射太赫兹波进行单片调制的可行性。最终将该集成器件与一组独立的超材料定位方案进行了比较，其中两种定位方案之间的频率差可以忽略不计，这进一步表明了所提出的带有自旋电子太赫兹发射器的单片集成超材料器件的几乎理想实现。我们相信，这种适应性强、可扩展性强的器件可能会对具有预成形太赫兹波的可设计自旋电子太赫兹器件做出有价值的贡献，并实现芯片级自旋电子太赫兹光学、传感和成像。

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  • 来源
    《Nanotechnology》 |2021年第10期|共9页
  • 作者

    Liu Yongshan; Bai Zhongyang; Xu Yong; Wu Xiaojun; Sun Yun; Li Helin; Sun Tong; Kong RuRu; Pandey Chandan; Kraft Michael; Song Qinglin; Zhao Weisheng; Nie Tianxiao; Wen Lianggong;

  • 作者单位

    Beihang Univ Sch Microelect Beijing 100191 Peoples R China;

    Beihang Univ Sch Elect &

    Informat Engn Beijing 100191 Peoples R China;

    Beihang Univ Sch Microelect Beijing 100191 Peoples R China;

    Beihang Univ Sch Elect &

    Informat Engn Beijing 100191 Peoples R China;

    Beihang Univ Sch Microelect Beijing 100191 Peoples R China;

    Beihang Univ Sch Microelect Beijing 100191 Peoples R China;

    Beihang Univ Sch Microelect Beijing 100191 Peoples R China;

    Beihang Univ Sch Microelect Beijing 100191 Peoples R China;

    Beihang Univ Sch Microelect Beijing 100191 Peoples R China;

    Katholieke Univ Leuven ESAT MICAS Kasteelpk Arenberg 10 B-3001 Leuven Belgium;

    Beihang Univ Beihang Goertek Joint Microelect Inst Qingdao Res Inst Qingdao 266000 Peoples R China;

    Beihang Univ Sch Microelect Beijing 100191 Peoples R China;

    Beihang Univ Sch Microelect Beijing 100191 Peoples R China;

    Beihang Univ Sch Microelect Beijing 100191 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 特种结构材料;
  • 关键词

    spintronic terahertz emitter; monolithic integration; metamaterial;

    机译：自旋电子学太赫兹辐射源;单片集成;超材料;

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