Optics & Laser Technology ( IF 4.6 ) Pub Date : 2020-01-02 , DOI: 10.1016/j.optlastec.2019.106023 Min Zhong , Xiaoting Jiang , Xuliang Zhu , Jing Zhang , Jinglin Zhong
The design and development of resonance-tunable and high-absorptivity metamaterial absorbers is a research hotspot. In this paper, a single-band tunable metamaterial absorber based on the strontium titanate (STO) layer is designed and measured. This absorption peak is enhanced from 90% () to 99.4% () and the resonant frequency point is shifted from 6.2 THz to 5.8 THz, while it is enhanced and shifted to lower frequencies with the structural parameter P reducing. Measured results show that this absorption peak shows only a 2% reduction when the measured temperature is increased from 300 K to 380 K. Synchronous, the resonant frequency point is shifted from 6.2 THz to 7.1 THz. Based on the temperature-dependence of the STO layer, a temperature tunable metamaterial absorber is experimentally verified.
中文翻译:
THz范围内的单金属层可调超材料吸收器的设计与制造
共振可调高吸收率超材料吸收器的设计与开发是研究热点。本文设计并测量了基于钛酸锶(STO)层的单波段可调谐超材料吸收器。该吸收峰从90%增强()至99.4%(),谐振频率点从6.2 THz移至5.8 THz,同时随着结构参数P的减小而增强并移至较低频率。测量结果表明,当测量温度从300 K升高到380 K时,该吸收峰仅减少2%。同步时,谐振频率点从6.2 THz移至7.1 THz。基于STO层的温度依赖性,通过实验验证了温度可调超材料吸收器。