期刊
APPLIED PHYSICS LETTERS
卷 105, 期 2, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4890521
关键词
-
资金
- NSFC [61271085, 60990322, 60990321, 11174055, 11204040]
- National High Technology Research and Development Program (863 Program) of China [2012AA030402]
- Program of Zhejiang Leading Team of Science and Technology Innovation, NCET, MOE SRFDP of China
- Fundamental Research Funds for the Central Universities
- Program of Shanghai Subject Chief Scientist [12XD1400700]
- MOE of China [B06011]
- China Postdoctoral Science Foundation [2012M520039, 2013T60412]
We demonstrated an ultra-broadband, polarization-insensitive, and wide-angle metamaterial absorber for terahertz (THz) frequencies using arrays of truncated pyramid unit structure made of metal-dielectric multilayer composite. In our design, each sub-layer behaving as an effective waveguide is gradually modified in their lateral width to realize a wideband response by effectively stitching together the resonance bands of different waveguide modes. Experimentally, our five layer sample with a total thickness 21 mu m is capable of producing a large absorptivity above 80% from 0.7 to 2.3 THz up to the maximum measurement angle 40 degrees. The full absorption width at half maximum of our device is around 127%, greater than those previously reported for THz frequencies. Our absorber design has high practical feasibility and can be easily integrated with the semiconductor technology to make high efficient THz-oriented devices. (C) 2014 AIP Publishing LLC.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据