材料科学
超材料
光学
锗
吸收(声学)
光电子学
波长
地平面
超材料吸收剂
平面的
硅
物理
电信
可调谐超材料
计算机科学
计算机图形学(图像)
复合材料
天线(收音机)
作者
Hossam A. Almossalami,Sen Liang,Jun Zheng,Hui Ye
摘要
Absorptive metamaterials composed of antimony-doped-germanium of different epsilon-near-zero wavelengths and germanium films are designed and fabricated for broadband perfect light absorption around the epsilon-near-zero wavelengths. By integrating two bilayers separated by a semiconductor spacer into a metamaterial structure backed by substrate and gold thick ground plane, we realize more than 93% P-polarized light absorption over a wavelength range of 1.8 microns for an angle of incidence of 40° and a flat-top 75% absorption over a wideband of 1.74 microns for an angle of incidence of 50° in the middle wave infrared region.
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