This communication investigates the spectral features of metamaterial-based absorber operating in the terahertz frequency band. Metamaterial-based absorber is comprised of copper (Cu) and graphene strips loaded over a silicon dioxide (SiO₂) glass substrate. The absorptivity of the proposed absorber is analyzed by varying the chemical potential of the graphene and the slant angle of Cu strips. The results demonstrate that absorption band can be tuned by varying the chemical potential of graphene and the slant angle of copper strip. Such an absorber would be useful for the terahertz filtering and sensing applications in integrated optics.

中文翻译：

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电可调太赫兹超材料吸收体，包括铜/石墨烯带

该交流调查了在太赫兹频段工作的基于超材料的吸收器的光谱特征。基于超材料的吸收剂由铜（Cu）和负载在二氧化硅（SiO ₂）玻璃基板上的石墨烯条组成。通过改变石墨烯的化学势和铜带的倾斜角来分析所提出的吸收体的吸收率。结果表明，可以通过改变石墨烯的化学势和铜带的倾斜角来调节吸收带。这种吸收器对于集成光学器件中的太赫兹滤波和传感应用很有用。