搜索

x

留言板

姓名
邮箱
手机号码
标题
留言内容
验证码

downloadPDF
引用本文:
Citation:

    张跃斌, 马成举, 张垚, 金嘉升, 鲍士仟, 李咪, 李东明

    Research on analogue of electromagnetically induced transparency effect based on asymmetric structure all-dielectric metamaterial

    Zhang Yue-Bin, Ma Cheng-Ju, Zhang Yao, Jin Jia-Sheng, Bao Shi-Qian, Li Mi, Li Dong-Ming
    PDF
    HTML
    导出引用
    • 本文设计了一种非对称结构的类电磁诱导透明超材料结构, 利用时域有限差分方法对其光学特性和类EIT效应进行了仿真分析, 建立了其耦合洛伦兹模型, 并对所设计超材料结构的类EIT效应进行了模拟分析. 结果表明: 利用两个长短不同的硅块明模和明模之间的耦合, 在1555 nm附近实现了类电磁诱导透明效应; 通过对该超材料的微结构参数进行优化, 实现了超高 Q值( Q约为8616)的类EIT效应, 透射率可达96%; 通过调节硅块的长度以破坏超材料结构的非对称性, 实现了对类电磁诱导透明窗口的主动调控. 所设计的全介质超材料结构具有低损耗、易制备、主动可调控等优点, 在主动可调控的慢光器件、高灵敏的光学传感器、窄带滤波器等光学器件的设计中具有潜在的应用价值.
      The electromagnetically induced transparency (EIT), which is a result of destructive interference between different excitation paths in a three-energy-level atomic medium, makes opaque probe light transparent over a range of frequencies. As this EIT effect is usually accompanied with strong dispersion, it has potential applications such as slow light propagation, optical buffering, nonlinear optics, optical sensing, etc. However, for conventional quantum EIT effect which requires stable gas lasers and low temperature environment, the implementation of EIT in chip-scale applications is severely hampered by the scathing experimental requirements. Recently, the EIT-like effect in metamaterials, which are constructed by designing the artificial subwavelength functional elements and arranging the spatial sequences, attracts tremendous attention because of its advantages, such as room temperature manipulability, large bandwidth, and small sizes. In addition, the high-quality factor( Q) value obtained by EIT-like effect has great significance in designing the metamaterial-based devices. In this paper, we design an EIT-like metamaterial with such a structure. The unit cell of the proposed metamaterial is constructed by two asymmetric silicon blocks embedded on a silicon dioxide substrate. Meanwhile, we analyze its optical properties and EIT-like effects by using three-dimension (3D) FDTD method. Based on the coupled Lorentz model, the EIT-like effect of the designed metamaterial is investigated. Then, by employing the electric field distribution on the surface of the metamaterial, and combining with the three-level atomic system, the mechanism of the EIT-like effect is analyzed in detail. We find that the EIT-like effect in the proposed metamaterial has high Qvalue ( Q≈ 8616) and the high transmission ( T= 96%). By changing the length of the silicon block to destroy the asymmetry of the metamaterial structure, an active tuning EIT-like effect is realized. Furthermore, the metamaterial structure has the advantages of low loss, easy preparation, and active-controllability. This study represents an innovative approach to designing the EIT-like metamaterial, which is expected to be useful for designing active tunable slow-light devices and highly sensitive optical sensors.
          通信作者:马成举,chengjuma@xsyu.edu.cn
        • 基金项目:西安石油大学创新与实践能力培养项目(批准号: YCS19211037)资助的课题
          Corresponding author:Ma Cheng-Ju,chengjuma@xsyu.edu.cn
        • Funds:Project supported by the Innovation and Practice Ability Training Fund of Xi’an Shiyou University, China (Grant No. YCS19211037)
        [1]

        [2]

        [3]

        [4]

        [5]

        [6]

        [7]

        [8]

        [9]

        [10]

        [11]

        [12]

        [13]

        [14]

        [15]

        [16]

        [17]

        [18]

        [19]

        [20]

        [21]

        [22]

        [23]

        [24]

      • 非对称结构超材料 最大Q因子 温度/K
        铜(Cu) 54 300
        金(Au) 7.34 300
        硅(Si) 8616 300
        下载: 导出CSV
      • [1]

        [2]

        [3]

        [4]

        [5]

        [6]

        [7]

        [8]

        [9]

        [10]

        [11]

        [12]

        [13]

        [14]

        [15]

        [16]

        [17]

        [18]

        [19]

        [20]

        [21]

        [22]

        [23]

        [24]

      计量
      • 文章访问数:5688
      • PDF下载量:220
      • 被引次数:0
      出版历程
      • 收稿日期:2021-01-12
      • 修回日期:2021-05-16
      • 上网日期:2021-06-07
      • 刊出日期:2021-10-05

        返回文章
        返回
          Baidu
          map