A tunable dual‐split‐disk resonator (TDSDR) composed of top and bottom Au split‐disk resonators (SDRs) in the terahertz (THz) wave is presented. TDSDR exhibits electromagnetically induced transparency (EIT) characteristic by changing the rotation angle of top SDR (θ) and distance between top and bottom SDRs (h). The bright and dark modes are defined by the resonances with θ = 90° and 0°, respectively. The resonances could also be controlled by changing h values. It can generate a tunable sharp resonance by moving the top SDR to change h value. Furthermore, the amplitude of EIT resonance could be tuned and switched on/off state, i.e., bright and dark modes by rotating top SDR with specific h value. When h value is 1 µm, the free spectra range (FSR) could be tuned 0.24 THz and EIT characteristic is not clear. By continuously changing h value to 3 µm, EIT characteristic could be tuned with a modulation depth of 75.58%. The average quality factor (Q‐factor) of resonances is 11.54 and average figure of merit (FOM) is 7.06. When h value is enlarged to 5 µm, EIT characteristic could be tuned with a modulation depth of 62.73%, while the average Q‐factor is 14.50 and average FOM is 9.35.

中文翻译：

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具有电磁感应透明特性的可调双裂盘谐振器

提出了由太赫兹（THz）波中的顶部和底部Au分裂盘谐振器（SDR）组成的可调双分裂盘谐振器（TDSDR）。TDSDR通过更改顶部SDR的旋转角度（θ）和顶部SDR与底部SDR之间的距离（h）表现出电磁感应透明（EIT）特性。亮模式和暗模式分别由θ= 90°和0°的谐振定义。谐振也可以通过改变h值来控制。通过移动顶部SDR更改h值，可以产生可调的尖锐谐振。此外，可以通过将顶部SDR旋转特定的h值来调整EIT共振的幅度并打开/关闭状态，即亮和暗模式。当h如果值为1 µm，则自由光谱范围（FSR）可以调整为0.24 THz，并且EIT特性不清楚。通过将h值连续更改为3 µm，可以以75.58％的调制深度调整EIT特性。共振的平均品质因数（Q因子）为11.54，平均品质因数（FOM）为7.06。当h值扩大到5 µm时，EIT特性可以用62.73％的调制深度进行调整，而平均Q因子为14.50，平均FOM为9.35。